For under $1000 I am not sure I would spend the money on suspension. THe Type-R system is hard to improve upon based on auto-x and track times. YOu really need a suspension system with independent height to stroke adjustment. To get this you need the TEIN RE or higher. The JIC FLTA2 or better, the Zeal B6 or S6, the Buddy club Racing dampers and a few others. The cheapest of these suggestions is the JICs which can be had between $1400 and $1500. The Zeals are around $1600-$1800 these days and The TEINs used to be even more. Buddy CLubs are in the middle of these prices I think.

I would strongly suggest you save up a bit more and get the JICs. THe design is far better than the TEIN SS or Tanbe suspensions in the sub $1000 category.