so, who want's to build me one of these:
https://classicmotorsports.net/forum/grm/diy-h-pattern-auto-throttle-blipper-set-up-for-the/67068/page1/
it would have to be all electronic (no need for pneumatic as the throttle is electronic and not cable). sensor on the shift linkage, controller, tie-in to throttle signal and brake signal, on/off switch, potentiometer to control amount of blip.