My engine is a 468 chevy big block. The RPM range is 6500. Compression Ratio is 12:8. I have found out that almost all connecting rods these days are imported to the US. Thanks for your imput.
For your requirements I would use a set of the factory GM 3/8 rod bolt rods with ARP Bolts & Nuts with side beam polishing down on them. Polishing is not even necessary I just do it on all factory rods I do. I have put considerably more on those than you are asking for with an 8,000 rpm laiunch engine shifted 4 speed at 8,000 rpm witout any issues.
Almost any aftermarket BB Chevy Rods better be able to handle what your needs are. Pro Comp I know nothing about yet. I have heard rumors is all.
Ed