PMF Ford F-250/350 ubolt top plates will fit any axle from 3.5" up to 4". This means it will work on both the single and dual rear wheel trucks with a 3" wide spring.
These are laser cut from 3/8" plate and then cnc bent to add even more strength. This makes them much stronger than the stock plates which are made from 1/4". We have 3 versions, one for the stock 5/8" diameter ubolts and one for upgraded 3/4" ubolts available separably. We also offer an "Airbag/bumpstop tang option. This is intended for use on trucks with lift packs as a lower airbag mount or a bumpstop tang. This eliminates the cheesy spacers that are otherwise needed to make an airbag kit or bumpstop functional with these larger lift packs. These come blank so if you are using them with an airbag, they will need to be drilled.
These also have 3 different center pin locations which allow you to center you axle within the fender well when using lift blocks with adjustable alignment pins. If you need a pair of lift blocks to make use of this feature, you will find that all of our blocks have this ability.