I hung out with Greek Lightning for a little while at Smoke on the Water. He had the 1075 package in his new 42x. He loves them. The idle great, start easily, and Merc is/was offering a rebuild after 60-70 hours (I think).
Cigarette pulled theirs at 80-90 hours from American Muscle (they were still running fine). Merc tore them down and found only a small amount of wear to the engine. This info came from Bud.
Heres a shot of Greek Lightnings package.