The big question is just how would you get them back?
With Pakistan blocking the passes south, the only other route is through the Central Asian Republics until you reach the ex-soviet rail system.
Its a hell of a long and arduous drive to a railhead followed by an even longer rail journey
And that assumes the ex-Soviet states would allow passage
Might conceivably be more cost effective to actually seize a Pakistani port and fight the way back with the vehicles through the Khyber Pass...