i put the mach .26 ss in my warhead it was great til the tranny took a crap for the 4Th time i see why they (druatraxx) put that whippie super kitten in this thing because they knew that the tranny sucked and can't take any real hp. plastic gears on the inside i dont know how anyone that has put big power in the warhead has been able to run it for anytime at all this is my 4th tranny they just dont stay together if anyone know of any upgrade for the tranny in the warhead please let me know but the mach .26 ss engine that i put in off my aftershock bring the warhead to life wheelies on demand for a block with wheelie bar but the tranny won't last long at all about 4 tanks is all i got out of it[&o]