When I bought my 14boltSF it also came with a Dana 44. They were from a 85 K20. Now I thought the Dana 44 was a 10bolt. I found out a couple of days ago its a dana 44. Whats the difference they both have 10bolts. I some what new to the differential world. /forums/images/graemlins/confused.gif 86K5,4"sus,2"body,35BFG,300Hp,Hotted700-R4,Flowmasters,D44,14boltSF,4.11gears,18"sub,1200Wamp.