gts is a 2L inline 6 naturally aspirated engine has under 100rwkw and rear wheel drive not to sure on the actual figure tho
gtst is a 2L inline 6 single turbo @ 110-120rwkw stock and rear wheel drive
and gtr is 2.6L inline 6 twin turbo @ 210-220 4wkw stock and has a smart 4wd system called attessa
r32's have t28/25 turbo's
gtst m spec is just like a pulsar q in an essance, jus had a few little extra's like a different front bar, and wing power & everything else is the same
then you also have the r32 gts4 which is same as a gts/gtst but 4wd same as gtr. jus dosnt have the extra power the gtr does a gts4 looses a little bit of speed over the gtst but when modded makes use of the extra traction
um other things, all r32 skylines have hicas which is a 4 wheel steering system
id suggest to buy a r32 skyline, but suggestions when buying r32's ive brought 3 gtst's now and have all been in exelent condition. what you need to check for, make sure the engine bay is clean, no oil or other fluids, also, turn it on, check for excessive smoke, watch the rev needle make sure its nice and steady, check the interiors, make sure it dosnt have any bubbles in the dash or any spots where its lifting/damaged, check the pilliars and stuff, best way to check the k's authenticity