170/6 build plus questions!

I had a 170 with the Super Six 2 barrel set up, 2 1/4 exhaust, head milled .06, 4 speed, and the MP 268 cam. Loved the combination. I would not bother with duals.
Thanks, I am thinking I may just port/polish the factory manifold. My goal isn’t a race car put a fun curvy road toy...