What a lot of people don't know is power out put has nothing to do with rods, its the rpm,
rods and more often rod bolts stretch at high rpm, this is where bearings spin as they loose their bearing crush
GTSBoy is right with people buying stuff that they don't actually need, a set of arp rod bolts around $150, then shot peening followed by a close and hone big ends to strengthen rods, but for not much more you can buy after market rods
to add, precision, spool, eagle manly etc all made in same place, they just sell in bulk to different wholesalers