heres the link to the page from the catalog of the company that makes them.
I think its like $20-30 a bar. Maybe get together with other bonne owners around your area to go in on one and get it cut with a band saw somewhere. You only need a drill press with a couple drill bits. 1/2" hole, so use a 1/4" pilot hole before you drill the 1/2", and get a vise to clamp it to hold, or used a C-clamp and hold it with your hand, cause it will grab and try to spin. I just put one in Allmachtige'* '00 SSEi on Friday night, so you can get his take on how it drives.
and on my 01 SSEi, the fuel lines coming fom under the car to the engine, on top of the super charger arent solid metal lines , they're a ruberized plastic hose, so there is not stress on the fuel lines with a stock oil-filled mount movement, the solid mount mod is a performance mod, and also a good cheap alternative to spending the 80-$150 on an oil filled mount.