I am looking for stats on the Inquisitorial amoured shuttle based of the thunderhawk pictured in Imperial Armour vol 2 page 205. Want the players to use one for there main shuttle. It will also hold bikes and a 6x6 dune runner for ground transport.

Dark Heresy Apocrypha is the only thing in Dark Heresy with Vehicles, don't know how much of it would be what you're looking for however.

It's an old supplement, a little difficult to find.

Deathwatch Rites of Battle has the standard Thunderhawk. Rogue Trader Into the Storm has a generic guncutter.

I'd say there would be .. two primary variants of the Thunderhawk in use - the assault version, which is more or less the same as a standard Astartes Thunderhawk with suitably modified seating arrangements, and the shuttle/mobile command center/base version, which would be a T-hawk frame and armor, with the innards altered, cutting down on troop capacity for limited bunk capacity.

In other words, use a standard T-Hawk profile as the base, and cut the carrying capacity down to what you want it to be, giving a limited amount of bunkspace, and add in whatever features/abilities you want it to have. Probably tweak what weapons systems it's carrying as well.