1965 HIPO 273 intake manafolds.. Any good upgrades??

Dual quads, IMHO, dont waste your time. If you use Carters, youll not overcarb, but youll have to really adjust idle mix down to about nill. Mopar recommended taking the velocity valve (air door) out of the second carter in the dual setup because it wouldnt open anyway! Even a TQ will work better and run faster than duals. Been there, but do what you like, its your ride