hrc450er
01-19-2011, 06:05 AM
i have a 660 head that has been ported was going to put it on but then i sold the quad and kept the head. the porting was done by a local engine builder. its probably nothing special but it should make more power than a stock one. i had a couple friend that had their 450's done and it was a noticeable improvement. i think its off of and 03 id like to sell it for around 300 anyone one interested shoot me a pm ill prob forget to check back here