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1987, 1988, 1989? I think they changed the engine and pushed it 2 inches back in the frame in 1990.....so not sure about 90, but I think the years before it did.
You can order it from the dealer and put it on any of them. you also need the "plug" that goes on the end of the crank. I had one on my 95 and I think it cost around 200-250$