This is only the pan form. the seat padding will take up more space. I may have the seat curve up kinda like a dirt bike seat. ( see video above.) As for lowering...only if I tilted it back. I have the tank leveled out and a couple of washers for it to sit on for clearance above the upper engine bracket bolts. It looks higher then it is. I may make a metal piece to cover some of that space and be an accent. you know shiny and pretty.