my buddy has one. he loves it. its reallly a badass engine. its direct cam to lobe so non of that rocker arm b.s. its a high and free reving engine. yes its small. but put a t28 on it and your set. its iron block with is a plus imo and parts are not hard to get they made ca's powerd cars of here just not turbo'd ones parts are interchageable tho. i have a rb20 and well the engines are basicly the same just the rb has 2 more cylinders. if you want a ca i know where you can get one thats wired for a s13 already. for like under a grand pm if interested.