aluminum heads

I put the regular stealthy and home port blended them, had a machine shop check them out, had to just fix 2 guides or just debur them, nothing major needed to be done, and they set the spring height. Bought these year and a half ago, have just started the motor but haven't had a problem, swapped out to the 10 degree retainers and run a 1.7 aluminum rockers on them.