i sold my NA R33 for $17,000 about 6 months ago. i had it for 2-3 months and just got sick of it. its a nice-ish car, but not fast at all
youve got to think, if you want a GTSt, whats going to be the quickest and cheapest way there? if its by first owning a N/A and convincing your parents that skylines arent death machines then go for it. although the resale thing isnt too great.
personally i would just wait, i know skylines are great but i dont think that by first owning a N/A then a turbo is the best way around. you will lose alot of money and get very frustrated with having to tell people its a non-turbo, especially after commodore drivers beat you