Chevrolet Silverado Transfer Case Seal

I Am Going To Look At A Truck Today An If I Take It.the Drive Is About Forty Miles. It Needs Front An Rear Output Seals On The Transfer Case...

If A Seal In The Transfer Case Broke Would It Ruin The Transmission?

I Took Out The Output Shaft In My Fronted Of My 4x4 To Replace A Leaking Seal. And It Want Go All The Way Back In. It Lacks About An Inch...

Bought This Old Truck At An Auction No Papers... Not Even A Manual, I've Never Owned A Truck Before, Not Even A 4 Wheel Drive... Question 1...