i have a 65 goat with a 400 ci engine.the alternator/fan/ps belt just shredded and i believe the belt was the wrong one for this engine.how can i find the right belt,this was a gates 7550 xl and the same replacement belt won't fit on the pulleys that it is supposed to fit(in line) even when i move the adjusting bolts all the way out.i found a code on the head that is C272362 YS. it has air,not connected so those pulleys have no belt and it looks like he used a small belt and forced fit it usine the wrong pulley.thanks