Bracket engine, what would you build and why?
I run a similar combo in a 74 Cuda to get 10.70's @123mph. Super bracket motor but give up too much at max revs, because of the OEM heads. Recently considered a new motor and thought I'd build a forged assembly, 500 incher, low deck or high, with Edie heads and Holley 950. Install a near steerable hydraulic roller cam, and I'd bet that with the lightweight car you have, you'll be in the 9's @ 132 to 135mph without any port work.