I don't think there are a ton of parts that are completely compatible between the 2 years. Seats probably would...center console may (which would be nice for the cup holders) The suspension, front is close, so things like the CV's would be good, the diff, etc. however you won't be able to swap any of the steering (totatly different systems) Rear end is different also. The axle could be used, but you'd have to weld on spring plates since the 97 is leaf and the 01 is coil.
Obviously the body is quite different, so nothing there. Really there isn't much, trans is most likely the same (assuming both are auto or manual) Not sure what else.
'97 Rodeo, V6/5spd 3" SL 3" BL, 33x12.5 Falken A/T, DOR front bumper DOR Rocksliders, custom rear bumper, Tera low's, half doors for summer
'96 Rodeo V6/5spd 3-link SAS, custom high pinion D44, 4-link rear, dual ARB, QuickAire 2, 35x13.5R15 Toyo MT's...work in (slow)process