I have a 34 coupe, man, VERY VERY happy with might i add.
It's currently cluchless atm, well not quite, but its slipping, so no drivey for me. so i can't take ya for a spin. not till next week or the week after...
I'm not much of a fan of the whole 4 door Tiptronic thing though, but each to their own.
but yes It's a very nice car for long drives.
as for any issues before byring the car, just the usual stuff... theres a thread on here somewhere (not in the act section) that has many a comment on "what to look for when buying a skyline" pretty sure thats the thread name.