You should be able to run the stock Kyosho 2-speed clutch bell on the 3 shoe Tekno adapter. The 1512 should be plenty with the 2-speed, but the lower kv motor will run cooler and still be fast, the on road cars have really tall gear ratios.
i cant get it to work with the gt1 but maybe it will work with the igt2 clutchbell? or are they the same?
Jammin SCRT10 Neu 1512 1y
Losi Ten-T SCT conversion Neu 1512 1y