this MIGHT not be exact its what i remember off the top of my head. search on yahoo you should find more info im sure
FJ20 are very old school technology. they were designed by nissan for intensive race use motor in which race series i dont remember but the engine was a 1.1 high reving beast. the racing designation fell through no one bought the engine so to recouperate the money they thought lets throw it into a stock car and bore it out to a 2.0 liter. and so they did and this way came the FJ20 series. they have been seen to be quite succesful in australia. north america though ive never even seen one online or in person. very rare motor. its damn old so parts will be a bitch to find. My suggestion: stick to an sr20det. its simplier. parts are cheap. Heck you even have a junkyard to parts if you come to automotion
anyhow good luck with the idea. i havent seen it done here yet in mtl but in the us a few people have got them done and they love them. its a Z31 that can actually handle. besides hatchback S12's look HOTNESS!! if done right of course