really worth every penny having your exhaust manifolds nicely ported and polished and you could sell them later and get you money back.. in addition i offfer that service as well in a good competive price... final, I will be making a nice set of headers for race motors which will me similar to the pentroof headers for $1600 and then the street version which will be similar to the GReddy ones and those would run $1200 and both should be out by the end of July 03 and i'm gonna start receiving orders once I have everything done.. oh and they'll be made of 304 Stainless unless you wish to order 321 which runs almost the double on the price of the material ...