I had an issue with them once a while back. Bought some Pro-Comp brand main studs for my 400 block when I was building the 452. They didn't fit correctly. When I called them, they said the part number on the box was correct, but the application most obviously was wrong. It was a Pro-Comp issue, but I got a little frustrated with them because they wouldn't give me my money back for return. Their policy is to only give in-store credit for returns. I didn't need anything else from them...... I ended up getting ARP studs through my machinist, and I think I spent the in-store credit with them on a timing chain (???). I just thought the way they went about things wasn't in the customers interest.

Anyway, other than that I think you'll be okay with them.