i'm 19 with a '99 G20t. Got it dec 9th, 1998. beige, fully loaded, but that includes an auto
it was technically the family car, but i drove it most of the time and as it turns out, i'm going to be driving it for the next couple years during college. but its not mine - so its not like i can do any upgrades to it, other than a subwoofer, because i dont get to keep it forever. and i'm tired of getting crap from people with V6s about my car having a 4-banger, which makes people assume its just a slow, rebadged sentra (and they would be half right ): what i really want is a '90-'96 300ZX TT. add a JWT ECU and POP and that thing will smoke 99% of the cars on the road AND outhandle them thanks to Super-HICAS 4-wheel steering. depending on the year and milage, that car in very good condition can be had for between $10-18k.
I guess it would be stupid to do stuff to a G20 if you only plan to keep it for the next 3 years at most. i dont think there would be a big market for it... especially with the G35 coming out in 2003.