if u wanna get something true JDM, go unique. Get a 1989 Daihatsu Charade
Theyre reasonably cheap, you can get one with low miles for under 1500 there and you can have it legalized, titled and streetable here for around 5k$ . IMO its a better buy than a skyline since everyone and their brother has a skyline, and performance wise its up there. Its 3.8L Twin Turbo AWD v8. Theyre insanely sick, over 300 at the wheels bone stock.