Ah - yes - I was not overjoyed to find out my 4.2 wasn't a TRUCK engine, however, mine has lasted 122,000 miles so far and only quit once (bad MAF sensor).
Otherwise its been a great truck and I've pulled lots of trailers near or at the trucks tow limit.
When it finally quits, however, I won't buy another engine not deemed TRUCK rated.
Based on all the bad press on the 4.2, the 97 leak debacle, and its general dislike in the community I consider mine to be an anomaly.
:happy feet: