I wouldn't sell mine. 6.3" Maxi-lites made out of 300M. There 520 grams 800hp 8500rpm capable all day with 3/8" SPS CARR bolts.
We were lucky enough to buy a couple sets years back when NASCAR set their 525 gram weight minimum.
Crower makes some finest rods available. They have a HUGE range of applications, weights, materials, beam designs etc.. If someone had a problem with a Crower Rod, they bought the wrong rod for there application or ran out of talent during assembly.