On the 58 I just did, I bought a 70 camaro as a donor for $200.00 I used the fron stub off of it, the rearend, and scrapped the rest for guess how much $200.00 I made the mounting brackets for the rear calipers and mounted 70 Monte Carlo calipers and rotors to make it 4 wheel disk, and used an old style corvet master cylinder for the brakes. I spent a total of $65 bucks to convert it over to 4 wheel disk brakes. All else worked out great. Take a look at my photobucket pics in my first post today to see it begining to end.