Which to buy next?
 

I have been seriously thinking of changing my headers, but dont know which to get. They have to be equal lenth shorty's though since I just bought a new pipe. Any suggestions out there from past experiences with different brands?

Actually, I would love to hear what most people are doing with these 4.6's nowadays. You know, what works good with different setups, and maybe some cheap or even free tips (other than air silencer :) ). I had seen an article in Muscle Mustangs about filing your spark plugs to half of the diode, and putting a 45 degree chamfer on the edges. They said it was good for a few horse.

Speaking of plugs, has anyone tried copper plugs over the factory? If so, what were your results and or feeling on them? I put motorcraft copper plugs on mine, but cant say I noticed one way or the other really. Just spent alot of time doing it. Ya know, pullin the fuel rail and all to get the coils off.

You could always go shifter...I'm gettin me a tri-ax for christmas. Next year it's time to supercharge the beast. I'm waiting till then before I do headers and high-flow x-pipe (damn emissions...).