360 build for dart swinger

Update alright I have found a set of j heads and bowl blended and ported them they 2.02/1.60 valves kb107 Pistons Im on the fence about camshafts I have been looking at the xe274hr I have 3:91 gears in the rear I have also thought about going solid roller block is ready for assembly. Wondering what your thoughts are on this camshaft ?