Well you could go with them but proper HID's require a conversion kit, which is simply a globe connected to wires connected to a ballast (power booster outlet thingy) connected to wires which plug into ur stock wires running to the power, this means a complete change in shit, I had to pull the stock globes out and corresponding wires, cut a 20mm Hole in the back of the low beam cap that screws into the back of the headlight and run the new HID globe n wires through it, which then connects to the ballest which u mount onto the engine bay somewhere, dw you get mounting brackets, then plug into the ground wires etc. running to the power source. So if u want to go proper HID's in a V35 coupe, ur gonna need to cut a hole in the headlight cap, the old plugs still sit there so if need to u can just plug in the stock shit again but if u take the head light out and look at the back, ull know what I mean, to run the extra cables for HID's youll need to cut a hole, but if u want to just change the colour to a white/blue bulb n use stock system thts fine, proper HID's need a conversion kit with ballasts, oh and mounting them in a B***H, I just cable tyed them as best I could haha