5K or 7K for poop mobile speeds
maybe 5k with charger, rolla boy can vouch for charged k motors in ke3x's
4agxx would be best, be it e, ze, or te
call your RTA and see what criteria you have to meet, or...the easier way is to find the NCOP (national code of practice) and read the whole thing. i know there are links to it on toymods
piss off the idea of a 1ggte straight away. its so f@$king tight in my ke70 it would be even worse in a 30
ive seen one with it done on a forum, but they never said how many hassles they had doing it
apparently it doesnt ruin the handling too much with some good tyres and suspension but just don't do it bro
ca or sr would be reasonable...but stick with the yotas :P 4ag