318 build

No... 60,000 original miles. no rebuild. All stock bottom end. Car right now has the stock motor with the performer intake and an adapter with a 4412 Holley 2 Bbrrl on it. The car has an 8 3/4 with 4.10 gear. Parts I have are the torker 2 intake, both carbs, a Mopar 508 cam, 587 heads that i am willind to have milled... Can I use these parts I have for a fun cruiser car? car is a 1974 Dodge Dart, as seen in my avatar pic. Basically can I mill the heads, they are 1.88, 1.6 valve... use the cam, and intake and a set of headers or should I look to smaller cam? If so what would you suggest?