Hi Dave,
I would like to offer (in addition to the other's that might reply) that you can also check our ebay feedback rating for feedback from those that purchased, received, and installed these rocker arms onto their engines. I would think that anyone that knows what to look for in a quality rocker arm set and understands the proper installation would accept nothing less for the same price.
To view our ebay feedback and customer replies to the Miller Rockers, click
HERE.
Paul