I sent one of my 1uz con rod in to ARP early this month. Talked to one of their tech's today and he said that Chevy LS1 rod bolts are a direct fit, short of being a tiny bit longer. The tech guy said it does not affect the performance of the fastner in any way. I don't believe there is a clearance issue with the bolt being a bit longer. They are available in 8740 chromoly and ARP2000 material. The ARP2000 is about 8USD a bolt. You can buy them in pairs or as a set.