If you can find a donor car for discs and rear end (necessitates changing wheels to bbp) you're miles ahead. Stiffer torsion bars up front with a sway bar and leaf springs in the rear along with shock (several good manufacturers, dont skimp on shocks) should make it handle and stop decent. Doing a similar thing with my 69 notch. 73 swinger provided discs, rear, V8 and transmission. 14 or 15 inch bbp wheels and tires are fairly reasonably priced. Good luck with the build and great gesture to your pops! Welcome to FABO..