3g I have seen a few nice saber cat 5 and most of the sabers have a chain case so reverse is a option as apposed to the crossfires.
heck for 3 U can find a pretty nice saber6 and that motor is good till at least 6k before it even needs a top end. and well past 12k before needing to split the case.
loosen the throttle cable a bit u have a 500