better axles for high hp and 44s
 

this truck project is strictly for off road mudding/bogging with super slight driving around town use,

heard heavier axles are better to handle high torque and horsepower which is why i plan to get a 2003 7.3 ford f550 crew cab long bed dually 4x4, the f550s are the heaviest superduty regular truck cab before you step up into the 650 and 750s for commercial usage, saw a few manuals but mostly automatic transmissions 450s and 550s was leaning towards automatics just because, but i have a class a cdl so driving manual is easy for me, saw a couple local ones before going out of state for a purchase and all, and will have the money in a few months, want to throw some 44 boggers on it, and do a 97 cab body swap, seen a video of a guy on youtube with the 44 boggers on a dually, where the duals looked connected or something or super little space between hard to tell in the video, and was in california and drove it around as a daily driver, if they were connected is there something that can be done to prevent them from eventually exploding or such? here is the video:

https://m.youtube.com/watch?v=5lv6G5GIdeA

and for the 44s on it a 10-11in lift with a little fender trim can get it done, was going to go 3in rsk, 6in suspension, and 1-2in on blocks, is there an easier way or better to achieve the lift? wanted to pair the dual billstein shocks with reservoirs with it as well,

heard the 2003 f550 has a solid front axle dana 60 and a dana 135 in the rear, and with the lift and 44 boggers regearing from the 4.88 i saw or some have or 4.10 i think will be a for sure change, heard 6.17s is perfect or right around there, what would be the best way to go about to beef up the axles, driveshaft, etc. for all this if everything is stock?

would be awesome to one day get swamp diesels 7.3 competition crate engine and swamp diesels 900+hp heui performance package then throw on the hypermax p-pump injection and see where the horsepower is at then with torque and all, heard numbers around 700+rwhp and 1500+ torque,

any help, advice, information would greatly be appreciated.