Hahaha. It's pretty reliable at this point. My only concern are the rod bearings, which are the last preventive repair pending. I could daily drive it if I wanted to at this point.And a new Chevy SS is 40K w/bombproof LS3.
But...if you got the M5 to a state of reliability...that would be a hoot and I would approve. You must have bought the one in the video.