Scott,
Good sounding motor.
What are you running in that thing?
You should easily be able to go 2:20's as your consistency gets better. I know how tough it is to get every brake, turnin, and apex just right, and how much it affects lap times.
Was this open track, with restricted passing,? I assume so due to your waiting to pass the Mustang.
Are you planning to get into wheel-to-wheel racing?
If so, the fun factor goes WAY up. There's nothing like drafting, bumping, and battling lap-after-lap with other cars.
The only downside is you occasionally have to put your car back together.
Have fun,