Tetrix Motor/Gearbox Clarification

[2011FRC2165]

If we take the Tetrix motor and gearbox (Part No W739023) and remove the gearbox, change the internal gears to make a different gear ratio, and then re-attach the modified gearbox to the original motor - is that legal?

Thanks.

[GDC]

Yes, as long as any new parts introduced are compliant with R92.