Alright. Yes fox header WILL fit out cars BUT you MAY or MAY NOT run into problems...your results may vary. The steering shaft is the most commonly talked about clearance issue. In MOST cases, some simple "dimpling" of the primaries will solve this dilema. The OTHER is when you decide to run long tubes....OUR clutch forks are clocked (positioned) differently than on a fox car. SO you may run dead into the clutch fork when you try to drop in the fox headers.
As for the smog pump stuff, the only fitting on the headers (ours stock) is for the EGR. The smog tube off the h-pipe will not be affected.
because its ugly, thats why i did it and the fact that it quaked like a duck all the time; i never understood on why mine did that, but i decided to rip it off and spend one cent to fix it, a penny to plug the hole on the header