V8, I did a little googling around and didn't come up with much either other than a few ready made ones already mated to engines by the engine manufacturer for rc cars and such. I am thinking part of the problem may be that the mounts are so specific to a particular engine that "generic" designs just aren't that practical. I have seen it done so I know its possible, though not sure how effective they are in small sizes. If you have access to Solidworks why not just start from scratch for your particular needs.
Maybe some of the more experienced IC guys will chime in with more help. Good luck though finding what you seek.
Bill