Simon1

Yes he does. A built motor, with more boost being added. It's easier/cheaper to buy it one time.

frdfrst

i hope you did't pay $27 for your mustang.i got mine from steeda and they were $17 a piece.found them at half that after looking around a little.they are a better plug so far.with the msd coilpacks and granatlli connectors it made a big difference.plugs are at .35.

jdback19

Yeah it melted the HT0's at 13 PSI!! And yes I did pay that price for them they were special ordered from Brisk for my application.