I'm treating my 79 jimmy to a full driveline & suspension face lift, and i'm trying to get everything together so I can do it in 2 or 3 days. I'm swaping out the 10 & 12 bolt for a 14ff and dana 60 with 8 or 10 inches of lift, and 39.5" tires.. Is there a way to get the drive shafts done before I do the work, or will I have to take measurements. If it can be done a head of time ballpark figure, how much? opitions? (my truck is going to be huge!!) When all else fails MASH the skinny pedal!