Well, that was interesting (sort of). I went into the Mercedes EPC and dumped the front axle part lists for 212.074 (E63) and 212.075 (E63 S) 2WD models.
Basically, they appear to be identical apart from the strut rod part numbers. There are some revisions to the strut rods on both models, and the some variants of the strut rods also appear on both the standard E63 and the 'S' model, based on (chassis number / build date?). There is nothing from the 4Matic version shared, contrary to what I thought.
I conclude that there is naff all difference in the suspension between the two models, although I haven't checked the strut part numbers. If you feel it's better to drive than the standard E63 it is probably in your head! (only kidding). It might have a different geometry. would be interesting to compare the alignment data for an E63 and 'S' model.
E63 Front Axle Part list (212.074)
29 310 A 212 330 01 35 JOINT CROSS STRUT 2 WDB212074
28 300 A 218 330 10 00 CROSS MEMBER RIGHT 1 WDB212074
27 300 A 218 330 08 11 CROSS MEMBER RIGHT 1 WDB212074
26 300 A 218 330 09 00 CROSS MEMBER LEFT 1 WDB212074
25 300 A 218 330 07 11 CROSS MEMBER LEFT 1 WDB212074
24 270 A 005 990 50 50 HEXAGON NUT W FLANGE STRUT TO STEERING KNUCKLE M14X1,5 6 WDB212074
23 270 N 000000 003277 NUT STRUT TO STEERING KNUCKLE M14X1.5 6 WDB212074
22 250 A 000 333 10 71 TS ADJUSTMENT SCREW FOR ADJUSTING WORK ONLY 4 WDB212074
21 240 A 002 990 51 54 NUT W FLANGE, BINDING FOR ADJUSTING WORK ONLY M14X1.5 4 WDB212074
20 240 A 005 990 48 50 HEXAGON NUT TORQUE STRUT TO FRAME-TYPE INT. SUPP. M14X1,5 4 WDB212074
19 240 N 000000 003281 HEXAGON NUT TORQUE STRUT TO FRAME-TYPE INT. SUPP. M14X1,5 4 WDB212074
18 230 A 221 333 01 77 RS SPACER RING FOR ADJUSTING WORK ONLY 8 WDB212074
17 230 A 220 333 00 76 SPACER DISK TORQUE STRUT TO FRAME-TYPE INT. SUPP. 8 WDB212074
16 220 A 212 333 00 71 ADJUSTMENT SCREW FOR ADJUSTING WORK ONLY 4 WDB212074
15 220 N 910105 014022 HEXAGON HEAD BOLT TORQUE STRUT TO FRAME-TYPE INT. SUPP. M14X1.5X120 4 WDB212074
14 210 Q 0000000001 IMPORTANT INFORMATION PART IS NOT DELIVERED, ORDER NEXT HIGHER ASSEMBLY 2 WDB212074
13 200 A 212 330 56 01 STRUT ROD RIGHT WITH BEARING 1 WDB212074
12 200 A 212 330 38 00 STRUT ROD RIGHT WITH BEARING 1 WDB212074
11 200 A 212 330 34 11 STRUT ROD RIGHT WITH BEARING 1 WDB212074
10 200 A 212 330 55 01 STRUT ROD LEFT WITH BEARING 1 WDB212074
9 200 A 212 330 37 00 STRUT ROD LEFT WITH BEARING 1 WDB212074
8 200 A 212 330 33 11 STRUT ROD LEFT WITH BEARING 1 WDB212074
7 70 A 168 357 00 89 PLUG 2 WDB212074
6 60 N 000000 003358 HEXALOBULAR BOLT M6X25 2 WDB212074
5 50 A 000 990 43 60 CLAMPING NUT 2 WDB212074
4 40 A 025 997 16 47 SEAL RING 2 WDB212074
3 30 A 212 330 00 25 FRONT WHEEL HUB 2 WDB212074
2 10 A 212 330 02 20 STEERING KNUCKLE RIGHT 1 WDB212074
1 10 A 212 330 01 20 STEERING KNUCKLE LEFT 1 WDB212074
E63 'S' Front Axle Parts List (212.075)
25 310 A 212 330 01 35 JOINT CROSS STRUT 2 WDB212075
24 300 A 218 330 10 00 CROSS MEMBER RIGHT 1 WDB212075
23 300 A 218 330 09 00 CROSS MEMBER LEFT 1 WDB212075
22 270 A 005 990 50 50 HEXAGON NUT W FLANGE STRUT TO STEERING KNUCKLE M14X1,5 6 WDB212075
21 270 N 000000 003277 NUT STRUT TO STEERING KNUCKLE M14X1.5 6 WDB212075
20 250 A 000 333 10 71 TS ADJUSTMENT SCREW FOR ADJUSTING WORK ONLY 4 WDB212075
19 240 A 002 990 51 54 NUT W FLANGE, BINDING FOR ADJUSTING WORK ONLY M14X1.5 4 WDB212075
18 240 A 005 990 48 50 HEXAGON NUT TORQUE STRUT TO FRAME-TYPE INT. SUPP. M14X1,5 4 WDB212075
17 240 N 000000 003281 HEXAGON NUT TORQUE STRUT TO FRAME-TYPE INT. SUPP. M14X1,5 4 WDB212075
16 230 A 221 333 01 77 RS SPACER RING FOR ADJUSTING WORK ONLY 8 WDB212075
15 230 A 220 333 00 76 SPACER DISK TORQUE STRUT TO FRAME-TYPE INT. SUPP. 8 WDB212075
14 220 A 212 333 00 71 ADJUSTMENT SCREW FOR ADJUSTING WORK ONLY 4 WDB212075
13 220 N 910105 014022 HEXAGON HEAD BOLT TORQUE STRUT TO FRAME-TYPE INT. SUPP. M14X1.5X120 4 WDB212075
12 210 Q 0000000001 IMPORTANT INFORMATION PART IS NOT DELIVERED, ORDER NEXT HIGHER ASSEMBLY 2 WDB212075
11 200 A 212 330 54 01 STRUT ROD RIGHT WITH BEARING 1 WDB212075
10 200 A 212 330 34 11 STRUT ROD RIGHT WITH BEARING 1 WDB212075
9 200 A 212 330 53 01 STRUT ROD LEFT WITH BEARING 1 WDB212075
8 200 A 212 330 33 11 STRUT ROD LEFT WITH BEARING 1 WDB212075
7 70 A 168 357 00 89 PLUG 2 WDB212075
6 60 N 000000 003358 HEXALOBULAR BOLT M6X25 2 WDB212075
5 50 A 000 990 43 60 CLAMPING NUT 2 WDB212075
4 40 A 025 997 16 47 SEAL RING 2 WDB212075
3 30 A 212 330 00 25 FRONT WHEEL HUB 2 WDB212075
2 10 A 212 330 02 20 STEERING KNUCKLE RIGHT 1 WDB212075
1 10 A 212 330 01 20 STEERING KNUCKLE LEFT 1 WDB212075