The bad news is you will probably need motor mounts, cross memeber, and rearend from the 76. The rearend you've got now is probably a 4.56. If you like being first to the next light, and filling up every other light not a problem. So look at the 76 rearend and see what it's going to take to swap it. Check the brake booster to see how it is mounted too. The good news is the complete front end should swap over without too much trouble. Drilling a couple holes might be all that is required. my .02 worth.

Larry
68 C20 327 daily driver
63 C20 292 Camper truck
65 C10 ? Custom Cab AC,PB,PS,$flasher


I don't own a vehicle that isn't old enough to drink.