I just started my new winter project again. i installed 670 mxz motar in a 76
rv 340 frame. But when i tride it out last winter there was some qustion as to wether the old style gear box wuold hold up shuold i update the cluch to the newer style (jack shaft) so far the sled has held up to what i was hopeing for any thuoghts as to any other mods to make ?????????????????