I'm looking to see who sells these, and if they are offered in varying thicknesses. If they have to be custom made, I am just going to go to JTSVP this Saturday and have my own made. It looks like 3/8" is what some have used, but I would like to try a little thicker, with the fronts being even thicker than the rears. Given the technology in the suspension, do any of you handling experts have recommendations on what the limits might be. I don't want to sacrifice function/safety for aesthetics.