Hi everyone, I have a question regarding the difference between the TT02 and TT02D.

I'm looking to build a TT02 chassis to use for rally, and the D version seems like a better deal as it comes with bearings and oil shocks. The only issue, is that in the instructions, it says that it cannot be configured in the "high" ground clearance mode. I'm trying to find the difference in parts, but I can't see why this isn't possible. From what I can tell, the rear suspension seems to be the limiting factor, as the instructions show the rear hubs in the "high" position and the front in the "low" position.

Is the limiting factor the length of the oil shocks?

Thanks for the help!