Getting A 1992 300zx?
 

I'm thinking about getting this 300zx but it has a few problems and was wondering if they would be worth fixing? First, it smokes the whole time its running which could be a few things. Second, how much work does it take to replace the timing belts on it?
its got 120,000 on the enigne and it has a two or three dents on the hood that have already rusted over. Its a 2+2 California car and the interior needs a little work. the car also hasn't been past 20mph in the past 2 years, so I'm not to sure of the transmissions condition. It might have a few more small problems but I'm not to sure just from looking at it. But it started up after being jumped and it skipped a little but when i added transmission fluid into the cylinder it was just fine. Is it worth it and the guys asking 1500.

Any feedback would great!!!!