170 or 225 for super 6 build?

Duuuude, you're building a Slant, not a Hemi. Even a good 225 will not grenade rear ends or transmissions unless you're a complete tool.

depends who you ask about me being a tool! :-D

sounds like the offy/390 or 500. i dont have any real experience with tuning carbs, other than tweaking idle speed, mixture screws. synching the two carbs on my honda twin was fun. i do have the mopar 6 cyl book with recipes for hot sixes, so that will help. shows which jets, etc. to run.

really just want a street car that can have some fun at the stop lights/backroads. you guys are great help!