If I'm not mistaken that one has been floating around the Atlanta area CL's for two years or so now. It sure looks like one I've seen in the past down to the missing rear fender flare. I wonder what the story is
You say that now, but the extra room may save you money and effort in the IC install itself. Otherwise it sounds like using the 6.0 setup will be a start either way since it's available in both front end looks.
The 6.0L isn't known for mpg, but makes good power. It basically replaced the 454 in the GM lineup. I recently sold a short bus skoolie that had one and got ~10mpg no matter what in the time I had it. If you want better mpg's the 5.3L is a better choice in most situations
The snow and conditions in general out here are quite different than in the SE. I'm curious what the answer will be, but I know I go a noticeable amount faster in the snw out here than when I lived there.
I seem to recall that CARB required engine swaps to be from the same manufacturer in order to even begin to be approved. Then again I don't think y'all test diesels, meaning you could use a diesel titled one to start from.
If you come down to the Boulder area I'm happy to let you crawl around my 1990 E250 w/351. It is a Class B so there are some extra wires, but the basic engine harness isn't changed AFAIK. I can tell you that the E150 harness I had at one point was slightly different though. Also I can confirm...