Looking at the service manual there were a number of small differences between the 86 and 87 cars. Small wiring changes, no tilt sensor for the alarm on the 87s, Trap Ox on all 87s... The throttle linkage is also a bit different on the 86s.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.