Here's some pics of my rear shock mounts. A bit of a different approach to Davids but they seem to work OK. Once the bolt goes in they don't budge a milimeter.
Thbody of the mount is made from a section of tube that has the same ID as the OD of the knuckle on the lower control arm. It's a very snug fit over the knuckle.
On this last one I've modified the brackets where the shock mounts to so as to bring the bottom of the shock in a bit. I didn't have much clearanve left onec I fitted the 11" rear rims.
Cheers