Originally Posted by TheBennyB

Instead of new gearbox design, a universal gearbox mounting plate would work. Put Tammy gearboxes in a HL/Taigen/Torro/Mato and vice versa if dimensions work. You also have to think about output shafts. Say someone did come up with your "ideal" gearboxes in the dimension and price point but doesn't have the output shaft for your sprockets. Then you have to grab new sprockets which may mean new tracks as well then your back where we are now price wise. I fit tamiya gen 2 gearboxes in my Luchs, if they fit there they'll fit anywhere.