Thanks Chryco and Jesus. That is exactly what I needed to know.
Hp, budget is on the low right now.
The 413 is a motor my buddy has that I can get for basically nothing.
The 383 that is in the car is not original to the car by any means. so, no need for originality.
I would like to stroke the 383 proper, but that is way out of my budget for this car right now.
So, next question about this motor. How much taller is the rb motor from the b motor from motor mounts to top of carb?
Or would top of heads be better due to different intake/carb possibilities?