Looking into throwing a set of gt40p's on a 94gt. Any idea where to get the vavles if i buy a bare set? Anything else i should know about besides header/spark plug clearances?
Anything change for smog? (aka has to pass nazi-smog-cali)
You can get the valves through any ford racing dealer. As for emissions, the smog holes in the back of each head are not there, as the explorers don't use the same smog pump set-up as the mustangs. If you live in cali, you will probably want to drill the requisite hole in each head, in order to stay compliant.