Diesel Bombers - New to your site

Hi I'm glad to get onto your site. I have a number of diesels as we have a farm and many of them are Fords....I try to do as much work myself as I can and think that this will be a great resource to draw from. We have a 91 7.3 Superduty, a 2001 F 350 7.3 crew 8' srw that pulls an 18000lb 6 horse goose ,plows and serves as plow and daily driver, and a 2010 F 350 DRW 6.4 that pulls our Heartland Cyclone toy hauler fifth wheel. Both are piped/ intaked the 7.3 runs Diablo Sport tuner and the 6.4 runs Spartan. Love my 01 but I need more towing power so I'm looking for answers.....lol.