I'm in the process of rebuilding my '73 S and am wondering what steering wheel the '73 RS had. The original steering wheel was 40cm. diameter (leather or foam trim), the 914 had 38cm. diameter.

Was this wheel used for RS as well, but then with leather trim, giving the wheel a thicker grip?).

Someone can shed a light on this? I'm thinking of taking a 914 wheel (foam) and finish it with leather trim and add a steering wheel spacer. Would this be the same as a Carrera RS wheel?

Brett Johnsons book shows only 38cm wheel as same as 40cm wheel with leather.

Thanks
Tom B.