I realized that I unwittingly became a Sparco fanboy - didn't intend to, just happened that way. Finally getting through my parts stash for the Mk2 race car (plus mocking up the steering wheel fit with my E36 wheel)
On the mechanical front, I've been swapping boosters/master cylinders/pedals to figure out which combination works. Originally thought I needed to keep the Mk3 2.0 booster with the Mk3 2.0 master that I have, but it has a different pedal plunger (ball-type vs. clevis) than the Mk2/Passat style brake pedal. So I swapped to the Mk3 brake pedal but that won't work with the Passat pedal cluster I'm running. So I swapped back to the Mk2 booster - it should work with the Mk3 master because it's a later style booster - and put the Mk3 master cylinder on.
Why did I go through the trouble? Not only does the Mk3 reservoir have the provisions for a hydraulic clutch - Mk2 is cable operated, and while there are 02A/02J cable conversion kits out there, I haven't heard great things about them - but I also want to run these babies:
I had saved the calipers from the VR6 Jetta that I parted 5 years ago. I got a set of Mk3 2.0 hubs, 11" Corrado rotors, and these DE calipers to go on the front of the race car to upgrade from 9" to 11" front brakes. Rears were already converted to disc at some point. May do a Mk4-style rear caliper conversion sometime in the future.
Also tackled the easiest subframe bushing removal on the M3. Poly bushings out, poly bushings going in.
Left the job at that last night because I went looking for the install instructions, or at least figure out which bushing goes in front, which half goes on top, etc. Got a response this morning from my buddy who installed these same bushings on his E36 - "I think they have it engraved on the side of the bushing but I'll have to check."
Turns out he was right...durr. I'm debating whether to paint the subframe, but this car isn't getting a resto (at least not now...famous last words) and if it was good enough in my old car, it's good enough in this new one. But I'm a "while you're in there" kind of guy, so I'm torn. I have a can of POR-15 coming for the Silverado frame, maybe I'll use the leftovers on this, but I also don't want it sitting in the way for much longer - I'm focusing on making the car a roller and getting the old engine and trans out this spring.