Advice on picking up an rx4

[spankle my wankle]

My brother works with a guy who has an rx4 that he says has been sitting under his garage port for 15 years now. He is hesitant about getting rid of it but i think ill be able to convince him. That is unless people here tell me its a bad idea. Are the parts hard to find (not sure yet what is wrong with it as he doesnt really know)? What are the usual problems that come with these cars? Its kind of a vague thread i know but assuming it has a straight body (he says it does) and isnt complete junk mechanically, besides a new motor maybe, would you go for it? Thanks.