'85 and '86 are the same,.I own both of them.
The models from '87 have a Upgraded engine and set up and more compression.
It is not so difficult to swap that engine in to a '85 ore a '86 model.
Just use the old inlet manifold and injector system and old engine boom from the '86 ore '85 4A-GE.
Don this on my '85 model and give it a '89 red top and he is way faster and fuel efficient now
