So I did a bit of research and this is what I have found:
Axle width (distance between hub flanges) is very similar between 986 and 987.
Inner diameter of the bearing is same for all, but 986 base has smaller wheel bearings.
Wheel side spline of the driveshafts is equal for all.
986 S and 987 driveshafts will not fit the 986 base wheel carrier / upright. The issue is in the diameter of the shaft end not fitting.
Rear suspension of 987 is nearly indentical to 986.
All 986 and 987 have the same rear brake caliper
986 base and 987 base have the same front brake caliper
986 S and 987 S also have same front brake caliper.
So my best bet seems to go for 987 wheel carriers / uprights and 987 driveshafts. The 987 has same wheel carrier for both the base and the S, so I guess any brake disc will fit, but will check.
The only catch seems to be the diameter of the strut being larger on the 987. So likely I will need 987 struts as well. Any other issue I might be overlooking?
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