[Shark413]

Hummm .. I have both (CEN buggy and truggy) and in my case the truggy has the 26/9T and the buggy has the 38/11T. Thats why the buggy uses a normal size spur and the truggy uses the ferriswheel spur. The teeth on the truggy ring gears are huge, probably why they could only fit 26 teeth on it. I have Kyosho ring/pinion gears and they fit on the CEN diff, so that may work (Kyosho ring/pinion with CEN diff). If that fails, I will stick the CEN buggy diffs in the truggy since the gearing is lower. And I am using a lower kv motor (Neu 1515 1Y). Regarding the brace, I saw someone else (may be you?) convert a CEN and they used spacers to match up the Kyosho diff mount to the CEN chassis brace. I have HB spiral pinions from another project, but the ring gears are gone (another project). Sounds like you have plenty of experience converting a CEN truggy, so keep the suggestions coming, while I am still in the planning/building stages.