I'm looking to put an HPI k4.6 (.28) onto my T maxx. This is the first T maxx Ive had. Ive been running a rustler for a long time and its Extremly fast. A friend of mine has a BB T maxx which he bought that way with the HPI SS .25. Its super fast. The T maxx that I have has basically nothing on it. It already has the chassis for the conversion. My question is basically clutch bell and spur gear set up. For some reason I'm completely lost. I'm trying to figure gear ratio. The problem having to use the HPI clutch housing and the Traxxas spur gear and they just seem.. well.. awful I'm wanting a mid range. good torque with really descent top end. So far The best has been a 18T robinson clutch and a 56T Integy spur. The problem is that all the reviews Ive read said that wont work cause there isnt enough room. However that is on a Savage truck. Will It work with the T maxx? Has anyone on here done this conversion? Does anyone have any suggestions???