Suncoast pro-loc race controller. locks up convertor at any set speed and will shift 4th gear at any speed. like new. used for a month or 2. $325.00. 205-533-0453
it was in my 12v 00 3500 with a 47RH. truck was a 24v with 5spd. when i did the swap i was driving it all the time. now it sits in the shop all week and goes pulling or drag racing on the weekends. i have only put 2300 miles on the truck after doing the 12v auto swap last may.