Those Schumacher mounts are very handy, but they don't put the engine in the stock location...exactly. I used a set of hemi conversion mounts in a challenger and the air cleaner just clears the hood (like, by a millimeter). I never got around to shimming the K member, but at some point you have to do what you have to do. Also, at some point you will really start screwing with the geometry of the front end. The 68 SS cars used special components (lower ball joints, etc) to correct the geometry. Those parts, so far as I can tell, are not available for a 68 SS car let alone a B/E body.