Has anyone tried to put C4 seats in a C3? I have a 73 that has stock seats without the headrests. They lack side support, and I would like to have something behind my head for safety. The C4 seats look more like what I would want.
I have a C4 and I believe that seat swap would be fairly easy. Look around for some used seats with power brackets. The C4 power seats are 6 way adjustable I think and would not be too bad to modify into your C3.