The ARP EXHAUST bolts i purchased were a huge disappointment. Despite their stainless steel construction they quickly rusted and became unusable.The packaging and instructions were also lacking, leaving me puzzled during installation. Thanks to my knowledge gained in practice as an automotive enthusiast, I was able to identify and resolve the issue, but it was frustrating nonetheless. The only pro is that the bolts were affordable, but the cons far outweigh any benefits. I would not recommend these to anyone..