I had bougth a 1988 civic hatchback and when i got home I had looked in the hatch and there was a trans just sitting in the back. It has been sitting in my shed at the house and i was wopndering if anyone could help me out and trying to figure out what type of car the trans came out of.

Describe more about the transmission

first off there maybe a sticker on it where the engine code would be next to it on the block. if it says l3 its a 88-91. the tranny input shaft, if you look where the shaft goes to the pilot bearing, if it has 2 rings its a 90-91....1ring its a 89 and no ring is an 88. as far as telling between si/dx/hf/std i cant say without tearing into the tranny. this is just saying its a cable actuated tranny. also the 88 tranny which sometimes can be found in the 89 vehicles is a 20 spline tranny. most 89 and all 90-91 are 21 spline.