a 10 bolt is not a very strong rear end,(for street use you might be OK) a 8 3/4 Mopar rear end would hold up much better. pretty cool looking car but coming from a mopar guy a 383(mopar) with inline quads or a 426 cross ram max wedge with a 833 4 speed or a 727 to a 4.10 sure grip 8 3/4 or dana 60 would be perfect... Oh and a roll bar or roll cage would be cool too. a g***er back in the day with 327 cubes would probably be C/Gas or D/Gas A and B/Gas had Big blocks in them sure wish your car was mopar powered but it still looks like a fun toy. good luck with it. Ron...