This unit will allow you to swap a 4L80E without the hassle and expense of a TCU. Converts the computer controlled transmission to full manual control with a 4 speed auto shifter. No other switches except for converter lockup. I can also build a unit that only locks the converter in D4 (O.D.) and unlocks on downshifts. The converter can be unlocked with a switch when desired. Easy to install; 2 wire hookup , plug and play.
I can also add a D3 "staging" option (aka sloppy xbrake…. see youtube) which will significantly increase the footbrake stall when staging at the track. PM for details.
I'm selling these at a fraction of what the US transmission builders charge and you can have more features.