1. Who do you suggest for a good top end kit for a 2003 400ex?
2. With the way it is smoking I am sure the cylinder is in need of more than just some honing. I imagine it needs to be bored a bit. Do I clean up the cylinder for a slightly larger piston or find either a stock bore cylinder or entertain one of the bigger bore cylinders?
3. 10:1 compression piston ok to go with while still getting some years out of it? I do not mind running good gas nor do I mind spending the money on a ceramic coated or anodized piston with coated skirts to help maximize the life of the engine.
4. Do I entertain a stock to just above stock compression 440 kit or is the stock connecting rod a weak point with increased power?
5. Cost is not a factor. I want quality components first followed by slight increase in power if it is possible using quality parts. If stock bore and compression is what is needed to match durability of a stock 400ex so be it.
6. Thank you all in advance.
