Don't forget about the 3 Step colder plugs, not many will need it but for the few pushing over 600hp it might be a good choice.

part# R5672A-10, Stock# 7942. 14mm, 3/4" reach, 5/8" hex, heat Rating: 10

 

From what I see these are all non resistor plugs
is it possible to get them or somthing alike with a resistor?

 

If it has an 'R' in the name, i.e. BKR8EIX, it has a resistor.

8 is heat index. Aso, 'I' means iridium. I got those, but didn't put them in yet, I'm using some copper resistor plugs now, NGK BKR7E or something. I feel like I'll need to get rid of them, though, I get a misfire CEL every once in a while.

 

I do not recommend any non-resistor plug, as they can cause misfire problems/interference.

NGK 3330's will do the trick for s2ks up to 600 whp.