I have a set of 8445 casting heads that have been ported and have bowl work done. They were just checked by the machine shop to be good and ready clean up. The guides were said to be good and he said that they could use a valve job but it wasnt needed at this time. I also have a set of Comp 918s with keepers and locks for a hyd roller set up. I will be going to the Nats on the 18th and can bring them down. Im looking to get 500 for all. Pics upon request,