Update: I've been emailing Brian, Owner of TechnoVersions. Here's what he said:
"Folks are happy with either option one or option two. If it helps make a decision, I was told that the stock lower mount is no longer available, but I haven't confirmed that. I'm only aware of one failure out of all that have been sold. It was a crack in the metal bracket that occurred with a high-powered car in a 24-hour endurance race. Since we learned that, the mount was strengthened in that area, so it should never happen again, even in these extreme conditions."
When I asked about the drive line angles his response was:
As noted on the web page, it's only a 2 degree change. I've never had a negative comment back from customers about using the top mount with stock engines. Not to worry!
Brian's been great to work with and I've ordered the bracket and am going with the Energy Suspension top mount. Unless you hear otherwise on this thread, assume that I love it. Jughead