GM Disc Brakes on 1940 Plymouth

Okay, let's try this again. Has anybody had any experience putting GM discs ('84 Camaro) on a 1940 Plymouth. I read that the Plymouth hubs were small and easily fit inside some disc rotors and only need to be re-drilled. I've heard that S-10 backing plates work. If that's so, shouldn't the Camaro brakes be an easy swap?
I've got the GM parts car out back.
Thanks,
Dick J

 

might be best to look at the stuff available from scarebird, seems to take a lot of the guess work out and I think most times the brackets are like 150 or so for the pair (both sides driver and passenger)

we will be using scarebird on Seabass49's Coronet...

 

I did mine this way:
http://rustyhope.com/site/?page_id=7 on a couple of cars. The calipers are GM metric, but the rotors are Volare with adapters for the inner bearings. The brackets shown take the place of backing plates.

 

I did scarbird on mine. It used 82 cavalier calipers and ford probe rotors. worked really well. and same bolt pattern.. I have a thread on here with pics.