Before you do anything, just change the carb.

The Taxi runs a QuickFuel 750 Vac Secondary with their off road floats and jet extensions. Mechanical pump, no return line, 1/2" line from the stock tank with a 1/2" pickup.

I've never had an issue at an Autocross, or a Road Course, with fuel supply, starvation, boiling, etc... The only time it will boil the carb is when it sets after a hot lap session and it doesn't get a chance to completely cool down. That's a 30 second inconvenience I can live with instead of investing in EFI.

Don't get me wrong, I love EFI, but don't throw out everything just because you need to spend a couple hundred bucks on a decent carb.