I think the old Nosram speedcontroller could be a extermintor pro?
When I gave up in the early 1990s, the ESC i used was a Speedmaster Ultra Gold Star with a 12 turn limit (this was in 1989).
Here is the racing gear I used:- Glynn Peglar 1700 SCE's, KO Esprit with the steering lock knob at the top, KO world champion servo with it's seperate fet booster, Tekomo pro plus slope charger.
My buggy preference was mainly Schumacher (Cat XLS,Procat or Cougar) although I did try Kyosho ZXR's and Yokomos for a time. I did convert my Yokomo into a Cat-fighter, meaning a Cat front end being fitted to a Yokomo chassis.The motors were quite special being a sponsored driver for B&R motors, the winds would be 15 triple or 14 doubles.
After returning back to the racing scene again last year, I am still running speedmaster speed controllers again. The models I use are either X500 or X3 with no motor limits. The speed ultra silver star is still available, but is much smaller than back in the late 1980's.
www.speedmaster.co.uk