Aside from obvious differences; adjustable suspension, dry clutch and different transmission ratios, are there other reasons to start a track bike project with an SE over an R model? My intentions are to upgrade the suspension (opinions and reccomendations welcome), which seems to have me replacing many of the SE parts. Are there any internal engine part differences? From what I have read the cylinder/head seem to make comparable power whether they are R or SE. Any thoughts would be appreciated. I would like to plan this project out a bit before just throwing money at parts. SE's come with a much higher starting cost. I just want to make sure i am not unneccessarily spending money that could be used for upgrades. Thanks.