Don't even think about rebuilding that engine. You'll have 3 to 5 grand in it. I doubt you could do it for less. And those 3.8's weren't particularly desirable. ! Find a takeout, preferably a 4.5, 5.0 or 5.6. Rowdie can fill you in on all the nuances. Unless you have cash to burn, or a major love affair with the car or your own machine shop that's your only way out !