Ok so I'm 6'4 and my head hits the roof. I have a couple good buddies that are car guys like me and another that owns a body shop. So this past weekend we lowered the the seat by moving the mounts lower in the back. Gave me some room but I need more. Has anyone else done anything else? Also where can I find a new rail. This once kind experimental and would like to make another one a little cleaner.