Blistein 5100s question

I'm looking to upgrade my 2008 DCSB TRD Sport 4x4 to Blistein 5100s. I found the following Craigslist post for 5100s off of a F250. Can anyone tell me if these are compatible? There seems to be quite a bite of difference in the part numbers listed on the TW threads. Would I need to purchase any other hardware to complete the upgrade? Thanks

http://sacramento.craigslist.org/pts/5295731764.html

 

Those are waaay too long for our trucks. Collapsed length is ~20 inches, extended length is ~32 inches. Typically for our trucks at stock height you see ~15 inches collapsed and ~23 inches extended.

 

Thanks for the reply. They looked super long but I was having trouble determining if 5100s came in different lengths.