Thanks for all the info everyone. My f250 sd ccsb 4x4 has been running great. Replacing all those parts and rebuilding Hpop has done wonders. I had planned on doing my fuel system this week and next but unfortunately I had an accident. It's in the shop having a the whole front clip replaced. Everything is coming off of a 2005 450. Intercooler,condenser,radiator,pwr steering cooler,support,front drivers fender.
I looked up the 05 f450 rear axle and it has a Dana 110 410 gears. There is 4" difference in the center to center leaf springs. I've been assured by someone who hS done this swap that it will work by simply cutting the welds off the axle and moving them out to fit my frame. It comes with all the hardware. 1500$ for the axle. Is this a better idea than using adapters to convert to drw? I already have 350 blocks and springs. I've heard bad things about adapters but no one I know has ever had a problem.