[Raptor]

The turbo is connected to the manifold which is connected to the head which is connected to the block, there is no flexable material anywhere in there that would isolate vibration. Supporting the turbo off the block is the right move. The downpipe can be supported as well, but bracing the turbo to an unsupported downpipe makes no sense at all, it would if anything, add more weight to be suspended from the manifold you are trying to keep from cracking.