Lowest cost 400 stroker

Dang those Maxx heads are $1300 assembled.

I'll have to think about that.

Couple hundred in valve job, few hundred in valves, another bill for springs, another for retainers etc..

So the Max heads. Are they not total crap?
Like any other chinkesium head. They need rechecking and finish work. If you do that, I'd drop back to the 470 or 451. You're gonna see 600 plus HP real quick. Do you plan on running a stud girdle?