These spring brackets are designed to mount onto 1967-1979 Ford F350 2wd trucks, except supercabs, and also 1967-79 F250 crew cab trucks, and allow you to install either 2008-16 or 2017+ Super Duty leaf springs, and Skyjacker FR173S in particular. These are the applications that are 34" wide in the rear. Before you order, plesae check that your frame is 34" wide in the rear and also that you have the oem rivet holes at the 29 5/8" and 28 1/8" measurements on the diagram in the pictures. 

All of these 34" frame applicatoins require cutting and welding perches closer together on the axle. Perches (and plates) are sold sepatately). 

These brackets come with drilling templates that locate off of existing original holes. Drilling a total of 16 new holes with a 7/16 drill bit is required.

The 2008-16 and the 2017 leaves are similar. They are the same 65" overall length. The forward bolt hole is differemt, therefore the brackets we make are different. The 2008-16 leaves require a 20mm bolt at the front. 2017 leaves require a 7/8" (really a metric equivalent) bolt at the front. 

Skyjacker FR173S is a 2017+ leaf option. It is fairly stout and has good load capacity. It rides well for how stout it is.

Skyjacker FR84S is a 2008-16 leaf option. It is plenty capable and is a little softer than FR173S. It should have enough capacity for most applications other than significant towing and hauling (perhaps beyond your frame's legal capacity).

The tan and brown truck is pictured with a FR173S Skyjacker 3" lift spring and a 3" block block. FR173S is a great all around spring and can be used for most any 4wd conversion application. FR175S has a little more lift, and FR177S has a lot of lift. 
 
This listing includes all four brackets, enough to swap out both of your rear springs for super duty springs. 16 new 7/16" grade 8 bolts and all metal lock nuts are included.
 
You will need to separately purchase these things:
-Rear leaves
-Leaf Spring plate- the 2017 super duty trucks have the U bolt pointed downward but you can mount U bolts in the traditional upward fashion with a basic 3/8" thick steel plate that I sell
-Leaf Spring Shackles for rear of leaf spring. These are not touchy- any 2005+ SD shackles will work with 2008-2017+ leaves fine. You can find these for $50 on ebay
-U Bolts- upgrade to 5/8"! (see Superlift 11604 for example, but the length depends on your lift blocks) no lift block = about a 9" U bolt. longer is ok too. 
-Leaf eyelet bolts- 5/8" x 5" bolts/lock nuts for rear shackles. 7/8" x 5" bolts/lock nuts for 2017 front eyelet
-7/16" Drill bit


More information on installing a Super Duty rear axle can be found here:

https://www.battlebornbrakes.com/rearaxle