Im just confused...I dont have a load of money to spend on a set. My brother has a set off of an el camino that had a 350...would those fit? I did a search and read that with alot of the headers they rub on the drivers side shackle... would these work if the headers my brother has wont? summit racing.they are 79 bucks...but they say offroad or racing only..i imagine this means they wont pass smog here in nevada...thanks Vendor: Summit Racing Equipment Product Line: Summit Performance Headers Material: Mild Steel Finish: Black More power for less money Chevrolet/GMC: 1967-87 265-400, 1/2 ton, 3/4 ton, 1 ton truck, 2/4WD, 1 1/2 in. primary tubes, 3 in. collectors, headers Our Summit performance headers are manufactured in the U.S.A. from heavy gauge .049 tubing, mandrel bent for superior flow and greater horsepower. The headers feature a pressure formed collector for better flow rate, 1/4 in. thick collector flanges with O-ring seal, and jig welded tube-to-flange plate for perfect fit. Gaskets, mounting hardware, and reducers included. For off-road and racing use only. Sold as a pair. or how about these hookers for 145 Vendor: Hooker Headers Product Line: Hooker Competition Headers Material: Steel Finish: Painted The best headers for your money. Chevrolet/GMC: 1969-91 265-400 Blazer/Jimmy, (2 door), 4WD, 1967-87 265-400, 1/2, 3/4 and 1 ton pickup, 4WD, 1 5/8 in. primary tubes, 2 1/2 in. collectors, Competition headers If you're looking for a header designed for maximum street performance, look no further than this pair of Competition series headers from Hooker. They're designed for the value conscious buyer with stock or mildly modified engines. Made from durable 16 gauge steel, each set features 5/16 in. thick flanges that are heavy enough to maintain header integrity yet pliable enough to seal each exhaust port. Sold as a pair.