PERFORMANCE WIZE NOT MUCH DIFFERENCE.THE DOWNTUBE IS WHERE RESTRICTION IS. I BOUGHT A HEADER OFF EBAY THAT HAD LITTLE RIBS,I GUESS FOR EXPANSION.JEEP DID A ARTICLE ON THE LATER INTAKE AND DIDNT GAIN ANYTHING SORRY FOR THE CAPS I AM NOT SHOUTING LOL

Last edited by d-150; 10/01/17 01:27 PM.