318LA build

I'm assuming a mild build, so if the flat tops are stock and the compression is low, the Summit 6900 is my first choice for value.
DODGE Summit Racing SUM-6900 Summit Racing™ Classic Camshafts | Summit Racing

If by chance the pistons have a decent comp height, with a little more comp, this Melling 23203 would be a good choice imo.
DODGE Melling 23203 Melling M-Select Class 2 Camshafts | Summit Racing

A 4bbl and duel exhaust is a no brainer, but any converter and rear gear would be ''usable'' with either on a 112LSA.

A cheap set of Comp 901 springs and a close to stock pushrod should put you in business.