I have been reading his post on the disk brake conversion. My situation is I only have a cab without a chassis and axles at this time. I had thought that I could use the chassis from a 1978-79 chevy C60 that I have. However after looking at the C60 its looking as if its axles will be too wide and push the tires out to the outer edge of the fenders. I want to run leaf spring suspension and the factory 20 inch wheels and tires. The truck will only be use to cruise around and maybe an occasional truck/car show. Any additional help would be greatly appreciated.