I want to get my EZ heads CNC ported this year and maybe a new solid roller to go along with it. I am running a 440 block now pushing 620hp. I want this motor to be reliable and not have to worry about it coming apart. So I have been debating about ordering a 572 shortblock from Muscle Motors. Is there anyone running a 572 on the street? Any issues or anything to know about them before I order one?