I have a VPI Jr mounted on the Target stand, and I belive that the stand is still made, evan though AA does not sell it. The trick to using a wall mounted stand is two fold: 1, Mount it on a Load Bearing wall, non load bearing walls are not tied into the total structure as well as the former, and they can infact move at modest SPLs; 2, use a good isolation platform, while Abstract7 seems to have gool luck w/ granit, I prefer corian, or some othert dense composit material. Whatewrver you do, make sure that you secure it to the wall w/ propper fasteners, #10 Steel, or SS drywall screws at a minimum.
Happy listening
Happy listening