well, from yr case, u better keep yr GTS-t. Cheuk out for sale section, PLENTY of member sell their GTR for a house.
Sure u get what u pay, a GTR is a "super car", so as the maintance. Heavier, more power - prepare to pay more on tyres, petrol.
and basicly every stuff/ parts.
similar as the potenial, VERY responsive to mod makes u can't control yrself.
very addictive car.
So after 1,2 year and u spend 10-20g on it, yr might have to sell it coz u need a wife and a house.
it's wiser to keep yr car and get a R33 or even R34GTR later on. But then it's yr choice.
i can get a GTR but decid to get a s15, simply becoz i don't think i can control myself spending ALL my money on GTR.