ya talking to my bro, he says basically the polish or coating. then the diameter of piping. But if it does start to peel or change color just get a header wrapping.... so im going cheapo ebay s*** (^:
Wish you luck....the ebay 'no-name' headers are hit and miss. Some have had no issues while most have had problems with the egr tube lining up which will require modification for you to bolt it up.
ya for the 100 bucks you save you can find a SRI! has anyone taken their intake mani to a shop to have the vtcs removed? if so how much would it cost. Im pretty scared of messing it up hahah
just checked ebay, the guy who sold the generic SRI seems to have disappeared.
No cai or sr?