I was at Cecil COunty, and bought a stainless steel header, might fit a Gremlin, I thought, someone else had bought one from the same guy, both used, he said they would only fit a 4.0 head, he had a 6-cylinder drag Gremlin. The center ports were spaced closer on the 4.0 head? This header is awesome, the flange is 1/4" THICK. Nice lookin' 3-inta-2-inta-one design, compact and clean. If it won't work on the 4.2 head, I guess I"ll have to consider an upgrade down the road, as this is one sweet piece of hardware. Only paid $10 for it ( the other guy paid $5 for his ). Worthwhile investment, I think. Anyway, just wondered if it was true the spacing on the 4.0 head was different than the 4.2 exhaust ports. Thanks for any more info, jerry Casper __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com