Alright I'm being evil seeing as I'm a Cummins fan but I'm thinking about a 6.2 for my Suburban. The possibility of a steady 15mpg(even at the slightly higher price of Diesel, PA has the highest Diesel tax in the country I believe), and some pulling power at nice. I may have a line on a 6.2 in need of a rebuild and the person used to have a turbo setup for it so I may be able to get that as well. What do you folks running 6.2s with Turbos think? Like the power gain? What do you really think you gained power wise? Do you have your injection pumps cranked up? What kind of mileage do you pull off with the turbo setup? Do you have a Banks setup, retrofit 6.2 or something else? Anyone running an intercooler? Sorry I must admit I haven't searched, I'm a newbie to the GM diesels. I'm thinking 6.2 with mild port work, Hummer intake, turbo setup, maybe an intercooler. Could be a nice fuel efficient daily driver seutp.