First, assuming you've got a nice flowing setup on that 347, you'll be well over 325 n/a.
I agree with 420nitro, except that for a street car I would stay clear of the c-clip eliminators as they WILL leak on the street. They are a great saftey feature on a strip only car though.
I'm running the following on my coupe:
- Auburn Pro
- 3.73
- 31 spline Strange axles (5-lug)
- T/A girdle cover
Great for street and strip for me.
Good luck,
E