I had a gt4202r on my street truck and replaced it with a wh1c over a gt4208 journal bearing. spoolup and power are both significantly better. with the 4202r alone I never cleaned up at all, tons of smoke, new set up almost cleans up completely, and probably will clean up totally at lower elevations. I would imagine that a set up the size you are thinking about would be way more powerful than your current setup.