Hi, looking into pickup up a 4-stroke Jaguar. I've got a couple of ZRT 600's now, both warmed over and run strong, is there any hope of the Z1 keeping up with these sleds? What kind of top end does the Jaguar get? I know the rest of the 4-stroke advantages, plus reverse/e-start, and the twinspar chassis, plus gas mileage should be improved, but I don't want to give up too much performance. So far I've not seen any performance upgrades for the Jaguar either, other then a turbo. What about the track length as well? I've looked at leftover 07's they say 128", but I've heard they were all 121".