I bought a JDM engine with low miles for $800.00 in Chicago and swapped it out. Before I installed the used engine I replaced the water pump, timing belt, all timing belt pulleys, timing belt tensioner and pulley bolt. It's much easier working on it in an engine stand.
If you go with a used engine make sure it's pre 1993 as they changed to a crank sensor for timing where your 1992 engine has a cam angle sensor on the rear head.
If you want to go nuts you can flip the engine over and check the bearings too. I didn't but wish I had changed the oil pump as the oil pressure is just two ticks above zero at idle with engine hot.
The car runs great and is my daughter's daily driver.
Go all Mitsubishi on parts. They cost more but some will give you a discount if you are a 3Si or DSM member.
Have fun
