[projectsupramk3]

MA70 and MA71 are the same chassis, in the early years (87-88) the n/a was designated MA70, the turbo MA71, but demand in the later years forced toyota to drop that label I suppose. As for the targa conversion, forget about it, if you want a targa buy a targa car. Why would you go through all the trouble of doing the conversion when Toyota already did it for you, it's not like the targa cars are hard to find by any means.