you should of went with the B1MC heads. as for the rockers that come with them from koffels they are JUNK... you will have nothing but problems. get the t&d rockers for it. two per stand and go with push rod oiling for the top end. i had the B1MC heads on my 572ci. the rocker didn't make it through the burn out on the first pass of the motor. i have lots of pictures on my other computer if you want to see them. they are good heads just don't buy the rocker that come with them. my B1MC motor after fixing the rocker problem made a little under 1100 hp. good luck with it. i sold my B1 motor two years ago and went to a predator motor. PS clean out your mail box.