I have an 06 450 with 100 hours on it. I have decided to keep it and rebuild it to last at least another 100 hours. I am not the greatest mechanic but havea friend who is very proficient and will help me do the rebuild. I'm thinking about going with the Athena 480 kit. My questions are what else besides the kit (cam chain etc.) should I consider replacing. Also, I have also considered just going with a high compression piston and not doing the athena 480 mods. Just for the record, I want more low-end and would sacrifice a little top end to get it. Any advice??