I am 6'5" with a long back bone, I used to have a '87 vert, the thing I remember most about the car, which I sold 16 years ago, is the narrow seating, it was actually painful on my hip joints, I dunno if a C3 seat can fit or not....I never had any issues with leg room that I remember in that car, indeed tolerated the lack of room in my '72 until ten years ago....
at that time I cut the rear seat support tabs off the floor rails, lowering the seat, stayed with the OEM padding because it sagged a bit in the seat, removed some seat bottom springs, and removed the black plastic seat belt cover for clearance...belt operated normally....
on the knee room, the car came with the stock fixed column, I replaced it with a '78+ Tilt/Tele with smaller wheel....that was done immediately up north yet....
when I lowered the seat, I also cut a U out on the bottom of the firewall along the floorboard and up the sides as high as the steering column, forced it forward, and glassed it in again....bent the gas pedal, and cut/welded the brake pedal so they are about 3" lower/forward, this pulled my knees off the steering wheel,
I have a console pad, and lean on it while driving with left hand over the wheel at 11-12 o'clock.....sorta the James Dean slouch position....
I think maybe to just remove the seat mechanism and tie the seat frame to the floor is possible the best solution for the C4.....
maybe some of my C3 mods can open a few ideas....
:bump::thumbs:
