here is the one i have, it came out of a 87gn but who knows. The gearbox you are talking about looks simular. Mine has four gear boxes and the ones kiddy corner of each other look to be the same, all of them also have 2 different mounting tabs on each. I will dismantle it and get a better pic. Give me a day or 2, and like i said it will be just shipping like 5-7 bucks.