What cam to use in 340

Thanks fellas. I am trying to keep things fairly simple; use what I already have and build a fun, reliable motor that will scoot down the road pretty quickly. I hope that I can sell the 318 to help fund this project, thus is why I am planning in using my J's. They are 1970 castings w/2.02's. If I do use them I will do a mild porting, gasget match and smooth the bowls. Nothing crazy. Machine shop will do whatever else they will need to rebuild them.
If I don't sell the 318 then I will use the Eddys and some other stuff off it.
I will not use any type of roller cam. I might do a mechanical lifter cam, but really uncertain if I will and will have to research that option more before making any decision.
Thanks for all the replies!