one thing i wanna say:
cheap GTRs are dumped here from japan for a reason!! if you look at domestic market in japan, the good conditioned GTRs still go for very high price! a good condition R32 GTR wil cost well over 25gs to import, why?? because they can always get sold locally without being forced to dump them to australia or NZ.
so either, buy one really cheap (like 12gs for a R32 GTR), rebuild everything yourself
or buy one in good condition, and drive it for a while before you spend money on it
i have had mine for 1 year and half now, done over 15 thousands ks, and it never missed a beat ( well there are times when work was not done properly so i had to fix it). i paid top money for it tho