i have a 1994 isuzu amigo with the 2.6 engine.

i'm not sure if the front axle and half shafts are bad or the transfer case is bad.

the vibration/grinding sound stops at time and it is definitely coming from the front.

how hard is it to change the front axle? how hard is it to change the transfer case? i have a 1990 isuzu 4x4 parts truck that i plan on stealing both of these off of to change. will the axle and transfer case interchange? which is easier to change?

if you have the same parts as my 90 isuzu im in the middle of changing me front axle/ cv joints it is a pain in the rear spend all day just to get it half way apart

I'd recommend actually diagnosing your problem before you spend hours and hours changing out parts. The transfer case is integrated with the transmission; so you'd have to pull and replace the entire tranny/t-case combo if you went that route. If you change the entire axle out all the way to the diff, that will work. You can't just swap the outer portions of the axles because they went to a different style on the Amigos in March '93. Your parts truck will be the earlier style and your Amigo will be the later style. The difference is in the size of the inner cup. But to repeat myself, figure out your problem first.