I just realized that the Tamiya Mini Series are the closest things to Sizzlers on the market. The scale is much larger though (1/24 and 1/32). They have some interesting tracks for the Dangun Racers that I am pretty sure you could run a Sizzler on. I may pick up some of these to play with in the winter. I don't think I have any worries of them being discontinued anytime soon. I just wish they were smaller.
Looking at the hop up's for these confirms what I have been suspecting all along. You need to get the right balance of speed and torque to manuver the high banks.
I think that at Stock ZZSE with a gear and axle upgrade will be sufficient to work on a Fat Track. A faster motor would just be a plus.
I really wish I had a performance upgrade kit to test with.