DID ANYONE KNOW ANYTHING ABT THESE PRO COMP ALUMINUM HEAD. I SEE THEM ALL OVER EBAY AND I WAS WONDERING IF ANYONE HAD USED THEM AND IF THEY ARE ANY GOOD. I ONLY HEARD ON 1 GUY THAT USED THEM AND HE HAD WORLD PRODUCT HEADS ON HIS MOTOR THAT RAN 11.42 IN THE 1/4 AND THEN PUT ON THE PRO COMP ALUMINUM HEADS AND WENT 11.77 IN THE 1/4. JUST WONDERING IF ANYONE ELSE EXPERIENCED A PROBLEM LIKE THAT
THANKS
MARC