I have used Eagle rods in our modified & Sprint car engines for 7 years now. In the beginning there was some bolt failures but no problems since. I currently have an Eagle 514 kit in my boat and love it. I had lost an oil pump drive so needed to replace everything but the block. $1400.00 got me everything and balancing too! just can't beat that. Some of the CAT stuff on Ebay is pretty good too