turbo exaust
 

will the exaust from an 86 turbo work on a 92 4cyl?

Other than the exhaust manifold, and possibly the converter it should.

You'll have to use the whole exhaust though. If the converter doesn't fit the rest probably won't either.

The "Y" pipe will have to be cut/adjusted.....a local shop did mine...plus you need to purchase the right side hanger for the tail pipe. Once done I felt the diff immed.