86.5/ 90 supra turbo

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Thanks, CanadianBak'inSupra. I kind of thought that was the case but

Fix the '90, the swap's going to suck. If you're dead set on swapping then just plan on swapping EVERYTHING (including the dash and chassis wire harnesses). If you don't have everything I strongly recommend you consider getting a hold or pre89 wire harness and electronics for the engine.

There are a thousand little things which will make this project tiresome. If you can gut the '86.5 first and then literally install the parts from the '90 as you pull the from the '90 it'll go a bit easier but still expect snags and things you didn't realize were different: 89+ has different motor mounts, different oil pan, different cross member, 2 small electronic aux fans (which pre89 aren't wired for), GTE has a hidden electrical fan between the radiator and a/c compressor, GTE has an oil cooler.... etc...