Camshaft + converter for 318 w/302 heads

I've got an opportunity on 302 heads they are bare. Getting checked at machine shop.
I have a 87 318 with U heads. As well I have a good running 67 273 with stock bottom end and 2bl pistons(non commando) 273 heads are stock with adjustable valve train.
Wondering which motor to use if heads check out ok.
Thanks