I have a 2006 mini cooper s convertible supercharged. Scraped the mid exhaust support plate in a parking lot one day and the supports holding it to the frame sheared off. Previous owner of the car had a cat back exhaust system install and from first inspection the vibration dampers do not appear to be stock. Looks like who ever installed the exhaust couldn't get the mid support plate back on so they spaced it with some rubber vibration dampers. Bolts on the plate side are glued into the rubber supports (glue is what failed). All the images of mini exhaust systems I have seen show the plate bolted flush with the frame. My question is what size are the stock bolts for this plate? I would like to order some longer ones and make some spacers to get the plate back on.

I think the part number for the bolt is 41007058312. But I'll need longer ones so I'll need to know the size and thread pitch.