I have a 4 bolt race block being prepped and machined this week.
Bored .030 over, honed, align hone, drilled for roller cam spider tray, square deck the block, tanked, magnaflux, cam bearings installed, freeze plugs and oil plugs. The total came out to be $609. I'll be reusing my current internals, the forged 331 kit i have now, now ill be looking at new main bearing, new rod bearings, piston rings, oil pump, and new gaskets and seals. Ill be reusing the bottem end hardware, all arp with under 2000 miles on it, shouldnt be a problem. Plus u need to have high temp silocone handy, assembly lube, and then there is always some extra that you forget....$$ Good luck