I have a 2001 400ex with a 440 big bore kit with 11:1 compression, stage 1 hot cam, crf450 timing chain (heavier duty), oversized studs, K&N air filter, and White Brothers E Series slip-on exhaust. I was thinking about getting an Edelbrock Eichner carb, a Curtis Sparks X6 full exhaust, a port and polish job, and possibly a rev limiter. Any advice or comments would be appreciated.