i get about 400km from 50l in a basically stock 33 vspec , its fine as a daily if stock , drives like a normal car if you potter around
the 32 is a good car but its getting old , expect some things to go wrong , particularly if its a early model 89-90 ish , there just even older
i looked at half a dozen 32s and found some reoccuring issues
rust - check wheel arches thoroly and all undercarige
leaking injectors
hicas and attessa issues
cv boots
couple with poor compression figures indicating engine problems , one turned out to have a cracked a piston on a valve loosing a cylinder and has been getting a rebuild the last 6 months
more but I cant realy remember at the moment
so at a minimum full inspection by a recognised gtr specialist performance workshop with compression test
and dont feel you need to look at a couple and make a decission , look at half a dozen if you can and dont settle for a substandard one
also do not neglect the 33 , its older , has several enginnering impovements to fix some of the problems in the 32 and just seems to hold up to age a bit better , probabky cause of the further development