I have been looking for an answer on this but I can't quite pit it down. Here it goes: If I take a 10 man squad of GKSS and I am Planning to combat squad them, can I take a Razorback even though the original squad is too big to fit? The dedicated transport rules in the big book do not say that a unit cannot select a transport that is too small to carry the entire squad. And the codex does not say anything that would prohibit it.
What it boils down to is I want to take a 10 man GKSS and upgrade the entire unit with psybolt ammo split them and have half ride in a razorback. Can I do this?