Yeah, sorry forgot to mention that the damn diff tag is GONE, which is what is making it even more difficult. I will look at that link and see what I can gather though............................................ ...Fast forward an hour later............................................. .........OK. I have printed and searched that whole line up of diff codes. Can you believe that the 3:50 ratio is the ONLY one not on there? This is supposed to be my hobby but I feel like Im gonna lose my mind! The 80-86 F-150 in 3:00,3:25, and 4:11 in 9" are all said to be 31 spline, but NL (non-locking). Yet the damn door tag code says H6 which is 3:50 and limited slip. Is NL and limited slip the same thing? Why the HELL is the 3:50 the only one not listed for the 84 F-150??? OMG Im gonna go out and get a smoke. Wait, I dont smoke. No matter.

______________________________________
KEN
Factory 65 Galaxie 500 390/4v