Chopper, welcome aboard Which M60 kits are those you will be building? Company and scale? I will add you to the roster here after this post, but if you could please update me regarding the builds.
Top, I cant speak for an M60 getting the packpulled,but IIRC, on our Mech Infantry battalion stuff, the packs would be pulled in the bay, when it was done in the motor pool, and placed on some kind of pallet. If we were in the field and the pack had to be pulled it would be placed on the vehicle tarp, IIRC.