yah mine is stamped as an 88 and it is an 88 because it also has the 21 spline count clutch on it, which i just figured out on accident as i tried to install my new act clutch and flywheel and noticed the clutch disc doesnt mate up. because the input shaft of the tranny has 21 splines (in 88) and 20 splines for every other year 89-91