how big of a shot are you planning on putting on the car? depending on the shot, you will need to drop heat ranges for your spark plugs. also, use copper plugs. some guys say iridium plugs, and idk, maybe the challenger is special, but most other nitrous cars using iridium plugs will heat up the strap and cause pre-detonation=engine damage plus, the copper plugs are ~$1 a piece instead of $9 and they work great. been using em for over a year. also, you're going to need to re-gap the plugs
correct me if i'm wrong guys but if i remember correctly they are gapped to .032?
as I lay rubber down to street, I pray for traction I may keep, and if I do begin to slide, please dear God protect my ride. - Amen