If the bores are fine, replace the pistons, rings, and bearings. Balancing is not a must, but if you replace the rod bolts, always resize the rods afterwards. The ARP bolts will fit tighter and will egg-shape the big ends of the rods. Save a few bucks, pacify pregnant wife, and rat-hole money to build a "Double-Throw-Down-Big-Ass-Honking-Stroker-Windsor" at a later date.
