What kind of amigo is it exactly 4x4 3.2 V6 205hp 214tq 5spd manual and your mileage.
They are body on frame which is good but if your amigo was a 4 cylinder I think you can do turbo they have cast iron blocks. But that’s not it you may have to build the engine and looking for those specific parts may take an extensive amount of time.
Maybe you should sell it and get a 2004 rodeo they had an available 3.5 V6 that made 250hp and 246tq. The passport was dropped in 2002 that only had 205hp.