Don't rush into buying one. I spent over 2 years looking at 32's before I found mine (but that was mostly due to p plate laws). Make sure the engine has good compression, mine was all within 1-2 psi of each other and have not had a problem with anything engine wise in the 10 months that I have owned it (maybe it's because most people reckon I drive it like a nanna). If there is a turbo timer fitted, it does indicate that the previous owner has tried to look after the turbos. I have only had 2 problems with my 32 since owning it. The gearbox started making some unwanted noises (which was fixed under warranty from the car yard I brought it from) and the old Jap battery dying when winter hit. Other then that I know things are going to break eventually, but will just get them fixed when they break.
They are a great car to own and drive. I was the same, wanted one for about 8 years before getting one and haven't been happier, It was my daily for 8 months and every time I drove it brought a silly smile across my face, and even now when I get home from work and see my 32 I still get a silly smile across my face (yes I am forever alone). As for taller people fitting in 32 I am roughly 6ft 6, well that was last time I measured my height which was 2 years ago (and I turn 21 in a few weeks so I bloody not get any taller) and I have had 3 others in the GTR one night and we all fitted. Just find a nice one and take good care of it and you will be fine.