using a dedenbear linkage type throttle stop as a s.l.e. set to come on at trans brake apply. sle comes off at .350 sec before transbrake release. i had a co2 shifter allready so the sle was easy install. dedenbear cc3 box. the sle function in the box is adjustable with lots of options. i really like it and would like to try some sst racing some day.