This might not be the full list, but I know some of the special items you want to do the swap correctly are gonna be:
- GET THE LEAF SPRINGS. Too many people do this swap, keep their TTB springs, and wonder why it rides awful and has death wobble. Take the leaf springs with the axle, it's part of the package.
- U-Bolt brackets. I forget which side it is, but one of the u-bolt brackets is unique to the D60 and is needed for the swap, get them both just to be safe
- Rear leaf spring blocks. F-350's have larger blocks in the rear than F-250's, and you'll sit either level or nose-high with a D60 and F-250 blocks. If you want the factory F-350 rake, get the rear blocks
- Front drive shaft from the F-350 donor. F-250 driveshafts have issues with length and vibration for some people, some people get away with using the 250's shaft but just get the 350's driveshaft while your there and save yourself a potential headache
- AND get the entire front yoke off the transfer case. The 250 and 350 share the same transfer cases but their front drive shafts need different yokes, and the 350 one is hard to find because D60 swaps are so common.
- The center link thing and the bracket it mounts to on the frame. I'm blanking on their names, but you'll see it.
- Rear overload springs are part of the 350 package, get them if you don't already have them. My 250 already had them from the factory
- Bonus item: if PTO is useful to you, just take the entire t-case. Another F-350 bonus is their transfer cases have a thingymajigger for PTO's. Useless for normal trucks, but some tow trucks and such have use for it