Have a 1998 GTP with the following mods...

1999 Intake Box and Coolant Reservoir
180 T-Stat
3.4 Intense Pulley
K@N Box Filter w/Gutted Airbox
ZZP 3" DP wo/cat or resonator, only mufflers
ZZP 1.0 PCM
ZZP 02 Emulator

I just want to know the best plug for these mods? I had a set of NGK
TR55's but look to go to some Autolite 605's

What 1/4 mile times could one expect?

Thanks,

Rusty