I'm familiar with both the Avid and Schelle since they were designed by Kurt @ Schelle. The Schelle would be a direct fit and so easy to install, I have it on my T5M. What is nice is the ability to tune how hard the clutch engages with the White and Red pads that is included. It comes with a tuning guide for the pads along with how to install and set it up. The Schelle slipper offers a wider tuning window vs. the stock AE unit as well as being very light as compared to the AE unit. This would help on high traction since the driveline will spool up faster for quicker acceleration. Let me know if you have any questions on Schelle products or reach out to Kurt (goes as KDub on RC Tech) or FB.

I know where the track is located. I went past there the other day. It's about a half mile from my house.

95 south to Cargo city/Phildelphia airport cargo exit.
turn left on to Bartram ave.
3rd light turn left.. I think thats 81 street Lindburg ave.
3rd light turn right on to Calhoon hook rd.
Go 3/4 mile to Mcdade blvd. turn right at the light.
Stay on McDade for a mile. When you get to Wycombe ave,(light) keep straight until you see the first turn on your right. (landmark is the main Cemetary entrance on the left and an old laundramat on the right. Turn at laundramat.
Make next left then quick right. Go straight 300 feet. Darby police station on the left, Jersey's track on right. The same block is Penn Wood West middle school next to the police station. Not much in parking around there. Neighborhood is kinda rough.