I know most of you will have already fitted your lovely new DRE units, but if not I did make a bracket for mine a couple of years ago and made a pattern which anyone else is welcome to use. Pattern was made for an SV (RHD) but have since fabricated another for a mate with an S3 and it lined up horizontally just fine (given that the S3 is narrower, I wasn't sure if the slope in the scuttle behind the steering wheel would be the same but it's close enough for my metalworking skills!) Much more effort than many will want to make I know, but if you have a hacksaw, a vice and are so inclined then good luck I made a pattern out of old cereal box before cutting and bending metal, may be worth doing the same to check my measurements will get your unit horizontal.