Originally Posted by TVT_DESIGN
-5 is stock on the N/A, -6 is one step colder and stock on the SRT, -7 is one step colder for the SRT and could be used for heavily modded and/or high Nitrous N/A
I checked the TVT site and it looks like the -5 is the "recommended" performace plug fot the SRT....yes? (I am guessing for no serious mods)