Tracker ZR2 Rims?

Hi, I've read that the ZR2 rims have a different offset than the regular model rims? Is this true, and will regular model Tracker rims fit on the ZR2 model? I want to get a second set of rims for winter tires and would like to know if other model or older model Tracker rims fit the ZR2? There are quite a few sets of early 90 Tracker rims around locally that are dirt cheap. Also some sets of Jeep TJ rims that someone told me would fit? Anyone know if this would be true?