There is a 90 4cly with a bad engine for sale for 250 bucks locally, and a 89 gt that the guy slid sideways into a pole on some ice for like 1500. The 4cyl is a AT. How hard would the 89 to 90's swap be? About how long would it take about? (I've got a fair bit of automotive knowledge, replaced a clutch on my impreza and stuff, got power tools) Could I just swap the wiring harness and plug everything in or what?
Would I have problems passing emmisions with a 89 engine in a 90's car?
Would I have problems passing emmisions with a 89 engine in a 90's car?

o well good luck dude