osmo,a15's or a14's mostly came in 81 sunny (b310) wagons here in aus,or in c22 vanettes.they are becoming harder & harder to find.if you're very lucky,you might find a 5 speed behind the a15 in the sunny.this will go into the 1200 ute with the fabrication of a gearbox crossmember.in america,it seems a14/5's & 5 speeds are very common,so it all depends on where you are.you can also try the ozdat classifieds'as i notice there are several a15's for sale.you could also try some of the engine builders,as they sometimes have spares kicking around you can get out of their way.good luck looking,& remember,if you find 2,you could always sell the second to someone on this site.