i have a 5.3.l vortec and i am puting a 2008 whipple supercharger on it what spark plug do i use?

I would just give them a call at whipple, they will be able to give you an answer right away.

Rapid fire would be an excellent choice. Other plat tips are just too hot fouls fast. i have a charged 95 5.7litre Z71 with MSD 6AL with MSD dual to single primary input connector to ignition coil and JBA shorties headers. Ive tried almost every brand/different featured plugs. ACD Rapidfires last long too