Okay, lets start with the hard shifting. First, yes the transmission should be serviced. Start with that. Now for the other potential problem, when it gets hard to shift, shut the engine and see if it shifts easy. If it does, I would guess the pressure plate going bad and not fully disengaging the transmission. Make sure the clutch fluid is full (the resivour on the firewall) and let me know.
As far as the change to 4wd. We always recommend staying with direct fit parts because when things are changed, there always seems to be problems. Just check your frame and make sure everything looks exactly the same. Also, everything in the front end will need changed too. It is a large undertaking and with an Amigo, it's hard to tell what types of problems you will run into.
Monday, January 4th, 2010 AT 1:35 PM