Garham,
Anything pre-2005 and I'd suggest the Clansman would be appropriate (most common).
Anything post 2005 would likely be Bowman.
Can't help with specific internal arrangements, but the aerials tend to be in the same place on the exterior for either system.
The HB kit offers the Clansman 'box' on the wing but it needs replacing as it is too small.
My recent Hardtop post in the CC forum shows a more recent Bowman mount.
http://www.network54.com/Forum/110741/thread/1345409774/XD+Hardtop+%28WIP%29
Hope that helps,
John