OK so I found a '95 in pretty decent shape for cheap ($1,500) and test drove it for a while, seems to run shitty but does run... has manual locking hubs, yet 2Hi / 4Hi / 4Lo on the shifter??? Oil leak that is fairly apparently coming from valve cover, and sounds like it has a few holes in the exhaust (under truck). Performance is INCREDIBLY dogged, i.e. can floor it and just slowly gains speed, doesn't upshift and start hauling ass like my '01... It has many other problems I can address myself, but am really worried about the engine performance, would a leakdown and compression test alleviate these concerns? I hear these are prone to head gasket failure, what else are they prone to I should investigate? After posting this I will do some research but this seems like a good deal to me (even though it has body rust, the frame is straight and only surface rust, and interior is actually decent!) so I feel this is fairly time sensitive and could really use your guys help!