Man that looks fun! Blazer is look`n good too! 
Looking at a 'Spartan Locker' for the front axle, not sure if they are any good? durability may be an issue?
Nope!! 10 deg outside, 10 deg inside lol!
Aye,I'm hoping to have the shop insulated with a heat source by next winter.
Just over 2 hours to pull that motor,including drinking beer and throwing a stick for the dog!