Cam advice for ill advised 318 combo?

Car is a "74 Duster with 3.25 gear and 235/70/15 tires
Hadn't thought of a converter..Suggestions?
I have no idea on compression. Stock pistons about .040 down the hole and the J's are not milled.
My real goal is to have it perform better than a 2bbl 318 (not be an embarrassment to itself) until I can build a legit 360 bottom for it....