I have one (used) 7.1" BBC H beam rod on order, to do some test fitting with it. I'll probably need to TIG weld a spacer onto both sides of the rod cap, similar to what I do with 292 rods, or use bushings at the top to center the rod in the piston. Either way, the rod will ride the middle of the crankshaft journal. A set of 8 265 or 283 pistons would end up with a couple of extras, but they're inexpensive enough to justify the purchase, IMHO. I also weight match every moving part in my engines to 1/10 gram (A dollar bill weighs almost exactly a gram). Each piston/rod/ring/wrist pin assembly is weight matched as a set. Ditto for matching the weight of both ends of the connecting rods to the same tolerance. Wrist pin offset compensates for crankshaft rotation and rod angularity- - - -not right or left bank on a V8. The only bank-specific pistons are on engines with custom dome shapes- - - -flat tops don't care which cylinder bank they're on. An.060 or .080 oversized 265 piston could be used to increase the displacement a little without of going to the extreme of a .125 overbore.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!