Sorry, if this has already been covered.. but i have been going through earlier post and cant seem to find this answer. I purchased a 95 mustang Gt and bought a used POSI carrier with 4.10 gears and 31 spline axle shafts.. i received it today and looking at the markings on the carrier it came from a F150. Is this going to work with my setup? I have a buddy who is an ex mechanic who is going to help me put these in, but before i tear this thing down I want to confirm that these will fit.. I am pretty confident that the carrier with gears will fit, but my biggest concern is the axle shafts being the correct lenth. the guy who i bought them from said they were in his 94 mustang, but scared that these are not going to work. also, if they do work.. are these going to be a good set up or did i buy something that is going to be crap in my car?? Please help? I have never worked on a rear diff before and this is all greek to me!