Height is the biggest concern of mine. I have a Zip Ty IMS tank on my YZ250 which is the smallest and most streamline tank for the smokers and I notice it. I think a tall seat would help with getting forward but it will raise the center of gravity with the rider being higher so i'm not wanting to try one. hhhmm that was more of a statement then a question ... Is the IMS lower then the Clarke in front of the seat? does either raise the front of the seat less?