Which motor for Tekno Revo?

I'm a basher and currently running 6s lipo, MGM Compro with Neu 1515/1.5D/F.
I want to upgrade to the MGM 12032, question is which 1515 motor can handle 10s? Bare in mind i've got the Tekno conversion and it says longest motor its compatible with is the 1515 range. I'ved used the Motor Selector Calculator but it says i'm out of the range of calculations.