OK thanks for the info - if I stay with a Flathead, I would go with a reground cam and hi-compression head from Edgy-Mopar Montana, and then the dual carbs and header setup
So I could start with a fresh short block
I just got my reprinted Parts Manuals - I am going to look over the V8 conversion, from everything I have read the early poly (scallopped valve covers) and early Hemi are the same block
So I would think either V8 would go in.
On the 265, I need to keep doing my homework before I decide - I do like the idea of a vintage hop-up on the 6, granted more expensive and less HP than either of the V8's
I also like the later 318 Poly - had one in my first car - cool engine!