Not hitting the rev limiter should knock some time off your 12.90 e.t.
Add cooler/drier weather and a 2.0 sec. 60' to the mix, and you should easily be in the mid-12's with no additional mods.
Lowering your 60' time will probably require the most practice due to the difficulty of getting consistent launches on street tires. Plus, the Bama 93 race tune can be touchy when trying to keep the revs steady while slipping the clutch during a launch.
But drag racing is a hoot, like you're discovering.
Good luck, and let us know how things progress.