Hmmmm, GM put them in the LS2 engine and warranties them for 100,000 miles.
Link to story on how good PM rods are:
International Navistar was usED PM con rods in 7.3 liter Power Stroke DIESEL!
The "fabulous" Chevy "pink" rod was a production rod that had been magnufluxed. Maybe shotpeened.
What is your worry?