Lift kit?
 

I have a 2003 f350 crew cab long box. I want to lift it to fit bigger tires to give it a mean look and so I can do more off roading. But I also want to be able to hook up to any gooseneck trailer without problems.?? What can I do to meet in the middle??

I have 2. 1/2 in leveling kit on front, spring leaf pack under stock springs. Clears 35 in tires and I pull any fifth wheel I have tried( quite a few). Pro comp makes a nice front leveling kit spring replacement that looks like even better setup for the older trucks like ours.

What size tires fit your budget?

Well budget wise I'm just trying to look at my options now but nothing to serious cuz I plan in the future when I get a new truck to go with a 6" lift or however big on this 03

Using a 6" lift will fit most tire/wheel combos up to 37".