It depends on what you want to do with the car and how much you are going to change. Being that they are as old as they are you will pay through the nose for one with low miles or get a decent one with high miles and build a motor. I have a buddy with a 383 stroker and a paxton and it moves. I had an 86, 88 and 89 back in the early 90s in high school. The 86 and 88 were 305s and the 89 was a 350. The 350 was a noticable difference in power obviously but even back then most were beat on pretty bad. You have to check how bad the car is twisted. They will almost always have some cracks in the paint (maby worse considering the age of them now) on the b pillar at the top where the corner of the window is. The t-top cars always leaked on me but it was worth it cause I loved riding around with them off. The chassis flexed pretty bad unless someone welded sub frame connectors on it. The dash rattled pretty bad even when they were relativly young cars so that should be expected. If you don't mind restoring it they were awesome cars, i always loved mine.
