FLM Ext. E-Maxx chassis. A new one, very new, like 3 days ripped out of the plastic new on a dropship from FLM.
and mocked up with the stock front and rear assemblies
I feel bad not buying it from Mike now that I've found this site, I did order steel idlers from him though, 2 days after I ordered the chassis when google led me here looking for gears.... I'm 3 months returned to the hobby after a 20 year sabaticle, and just now starting to venture to other venues than Traxxas.com
Edit: Nevermind. I wrapped it up in electrical tape and CA'd it to the EVX.