Differences: 1992 2WD Loyale & 4WD Loyale. Exhaust?

[mtncar]

Hello!

 

I am considering buying a 1992 2WD Loyale - automatic (134k) w/blown head gasket as a parts car, as its very cheap. Quite a bit cheaper than 4wd parts cars I've found. I own a 1991 4WD Loyale - Manual (398k).

 

I have read about differences in struts, but I don't see other discussions about differences between 2wd and 4wd models. One thing I would like to swap is the entire cat/exhaust, as mine is completely rusted and shot.

 

Input on compatibility of the exhaust, and any other parts, is appreciated.

 

Thanks