Nice rig your boy has there! That's the exact axle and locker combo I ran for years. With 35s it was great, but with the 37s I'd have preferred 5.13s. After wheeling the Jeep since '07 I decided to finally put some big axles in it so I no longer have to worry about breaking them. New combo will be Ford Dana 60 and Sterling axles with air lockers and 5.38s. Stepping up to 40" tires, too. I plan on keeping the good road manners as I drive this thing all the time and love taking it on road trips.
And if you're interested, I'm documenting the Jeep build on my YT channel:
https://www.youtube.com/channel/UCQg...uSHByWUvBjNK8w