Hi Dave; 1989 M16, pluseight gearbox.I don't know its history prior to my purchase in 97;no mention on the build record of anything special. One owner prior to me. Extensively worked on in 2004 by Omex industries (700 series ems replaced the stock item) big power increase and remodelled torque profile, pulls from near rest in fifth; rev limiter at 6500. It will pull from rest through the gears up a slight incline for three kilometers without touching the loud pedal. Anyway I'll run you checks as soon as my sciatica goes away. Thanks again. Meabh.