I bought a 1979 242GT which I intended to save initially, but which turns out to be just too far gone rust-wise to put any investment into. The mechanical and trim parts are all in very good, shape, though, so now I think I will make a more-or-less ersatz 242GT out of my other car, which is a good condition 1984 242 DL. I have some questions about this 242GT, though.

The rear axle for GTs is supposedly a 4.10 with a limited slip, from what I read. This car has a 3.91 with an open diff. Did someone steal the rear-end off of this car already or did some cars not have the performance rear?

What cam is in the 1979 car? I have read conflicting reports. Someone with experience would be great.

Supposedly the 1979-1980 cars had an additional lower A-arm support of some kind, but I don't see any evidence of that on this car. Can anyone confirm or deny the existence of such a device? I have the strut tower braces, stiffer springs, etc.

What was the original material for the backing board behind the gauges in the 242GT? This one appears to have a painted piece of wood...

Thanks!

Karl