Well, I have two dream cars. For my first one, I would get a Nissan Silvia S13 K's AERO 2000 CC and replace the engine in it with a RB24DETT. Then I would put better turbos on it, get a better computer and intercooler, get a 6 speed manual transmission for it, and then paint it white and get gold 5 spoke rims for it.
Or...
I would get a 1996 Nissan 240SX, convert it to a Sileighty, put a RB24DETT in it, upgrade the turbos, upgrade the computer and intercooler, get a 6-speed manual, paint it white, and get 6 spoke deep dish grey rims for my Sileighty.