1970 340 intake manifold ??

I have a 1970 340 that's been sitting apart for waayyy too long. Long enough that I've actually forgotten the direction I was headed with it. I am finally going to get it put together and am curious as to what others think is best.
So this is what I have to work with:
1971 Dart Swinger body with no mod's except a 1970 8 3/4 with 3.23 limited slip, 4 speed, headers.
1970 340 (Duster) with:
electronic ignition
6-10K miles on full rebuild, TRW pistons with oem compression (10.25 l think)
NEW install of a purple shaft camshaft, solid lifters, never yet ran.
Holley 650 double-pumper, square base.

And now the variables:
Holley Street Dominator, looks like a square base carb will bolt on without adapter, but need to verify that.
Edelbrock SP2P-318, definitely shaped for a spread bore, would need an adapter plate.
OEM 1970 Plymouth cast iron 4bbl manifold.

Which manifold would you use?
Thanks!