Your email does not work. Just sent you a PM. You can call me up if you like.
I recently built a 348 (out of a 318). I destroyed it on the dyno, but it should meet your performance requirements. I used a Comp Cam 264 HR12 with Edelbrock heads. 268 would probably be it for what you want.
Greets
Flo

1967 Fury III 4door HT tiny 318, late model roller block, bored and stroked to 344