About a month ago I popped a head gasket and, was going to put 425 studs in when replacing it. After many promises, missed shipping dates, and even a few different vendors everybody finally admitted they were 3-4 weeks back ordered. So I ended up with 625s. I'm probably better off for that one anyway. Now I need ball joints and, EMF look GREAT and a lot cheaper than Carli, so I go to order a set....yep...2-3 weeks back ordered everywhere...