I just ordered colder ngk plugs for my r53 because my stock plugs are old and I have a pulley. I also have an MSD coil and kings borne wires. What should I gap my new plugs at? Should I increase it because of the coil?

 

They're pre-gapped out of the box. Don't mess with them; just install them.

 

I run stock gap...heck most iridium plugs are so brittle, they should not be gapped.
With some higher power coil packs some folks experimented with opening the gaps a bit...but the msd is not THAT much more powerful...and remember, the gap will widen as the plugs wear.