head port help

I used them and have to say they would only be good for a completely stock engine in the low power range turning no RPM's while looking to max out a search for mileage.

BEEN THERE DONE THAT!

My stock 360 sucked in the screens 3 times. Yea, I'm a glouten for punishment. But, I had to know for sure, and now I do, they suck!

Stay away from them. You have been warned.