no but an bully, YZa, Dt1, ossa,can am and all the other flavours they ran with the air heart kits in the 70's would. so hypothetically you would pick you mount, or should i say power plant. Houston Astro dome 74, honda 250/350 in a champion frame with rear disks and barnes QC, you drop in a set of rear shocks and a padded seat and why wouldnt you be able to MX that ? Firko had the same Honda in a champion from memory but dont remeber if he still had the disk on it. im just wonder how the scales balance cause the codes should cross over both ways not just from a specific list ?