R33 AWD and R34 AWD was N/A only and conversely R32 GTS4's were turbo only. They came in auto and manual and 2 door and 4 door variants.
Auto's are easier to find than manuals. R33 and R34's share gearboxes with stageas.
Auto R32 GTS4 sedans were used to make R32 GT-B's by autech, which were limited edition R32's with RB26DE (N/A)... in commemoration of the oldschool Skyline GT-B's which were the predecessor tot he KPGC10 GTR in the 70's.
4 Door R33 GTS4 chassis' were used by autech and nismo to make special edition 4 door GTR's.
That said, I don't think R33 and R34 4 door sedan GTS4's are eligible for import as they don't meet power to weight restrictions (too heavy and not enough power). Altho I'm sure some compliancers know ways of gettin them thru.