personally I dont think they suit skylines, looks ok but doesnt really suit it.
But if you are going to spend the money, its best to go for the ones with the gas shocks. The custom made hinge style ones arent of the best quality and you have to be REALLY delicate when opening the doors on them. Been in an S2000 that had the hinge kit on it and I was so paranoid each time I opened the doors.