I have a new project, I just picked up from a buddy it's a 2004 rx1 with the shorty on it and it's got a chain case rebuild I was wondering on the options I have for it such as after market gears or just the oem parts for the rebuild. And also what would I be able to fit under it for a deeper track and or rail extentions or new skid maybe? Any input would be awesome and thanks for your time!