Yes you are rite its basicaly just the wheels,tyres,wheelie bar and bodyshell.I had a 3.3 on order but have changed it to the 2.5.My mate put his 3.3 in his jato and it was still wheelspinning 100 meteres down the road and has now put his 2.5 back in.To run the 3.3 you are going to need a very big space