Maybe…
Your car is more like an under prepared STU class car at .846. To be competitive in class you need the engine mods and lightening. Light exhaust, headers, a tune, light weight seats.
You were 5.993% slower than Justin using the STX to STU PAX adjustments. Your 50.276 raw time adjusts to a 48.770 in the BMWCCA system but to equal SCCA it should have been a 49.398 or 88 points instead of 80 points.
Your example is tough because the car is not prepped to the highest levels within the SCCA class.