As I scour craigslist for a work truck, I see some good deals on the older Ford 300 inline six cylinder trucks and the work truck trimmed out newer 4.2L V-6 F150's. I am going to run a 10 foot enclosed trailer as a solo outfit with one Zturn, a push and trimmer/blower and tools etc. I WANT a diesel truck even thought I KNOW I don't NEED one at this stage in the game. I know I will probably upgrade in the future, so I keep going back and forth on this... $1500-$3K gets a nice used 6 banger F150, or spend $5k-$9k on a higher mileage 7.3L Powerstroke or a Cummins. Either way, I need a long bed and 2WD for the area I am in. So how many folks are happy campers running 6 cylinder trucks for the towing rig? Any regrets? Did you install bigger transmission coolers to help out with longevity? Thanks for any input. I apologize if this has been covered, I didn't see much when I searched.