Hi i just wanted to know if this does actually work because i have read alot of stuff and im not sure. Ive just got some levin twinpots and the caliper carriers. From what ive read you can run 276mm discs from a levin with a 3mm spacer behind. If this is true ill like my setup to be like this. Also would it fit under 15s. If this does not work is the astra discs a straight fit with no spacers. Ive heard i just need to shave 1mm from the middle to make them fit. Pls correct me on anything i might have said wrong.