360 build. Need advice

I agree on the smallest bore possible. No need to run even .030 if the standard bore is good. The HP gain you will see from boring will be so minimal, you'll never know it. Plus, you'll have the benefit of having a lot of block left.

...also one last bit of advice....since you did ask. If this is your firsr Mopar project, keep it simple. Build a stock bore and stroke 360. It will surprise the hell out of you. Strokers have some special machining and assembly considerations you might not want to encounter on your first build. Just food for thought.