Thanks for the interest in this so far. Certainly the M107/110 hull is the way forward.
I have a slightly worse for wear M107 in a box that may get a re-use or the stash kit of the M110 that has been sitting there for a long time, dust off that and do a complete new build. TBA

It is currently sitting on the M578 ARV hull with the Jib Turret removed.
The M110 base looks better to me, but I'm concerned about weight. Although I acknowledge that a big chunk of steel has been removed to fit the launcher & missiles, I'm still a bit concerned. 
Guy: Brian's M110 build is certainly tall but I doubt that weight would be a worry. As you said, "a big chunk of steel has been removed". And the barrel of that M115 piece alone weighed 4.6 tons.
Does anyone have a weight for the Sea Wolf GWS-25 sextuple launcher?
According to various dribbles of info around 7 Ton, give or take. So, a lot

How much of that is extra shipboard gubbins, no idea.
Height issues may be addressed by making it a quad launcher perhaps. Plus the original test was only the complete Sea Wolf kit plonked on including the entire base, that will be cut down in some way.
So, the long and short of what I am trying to say is that any land-based Sea Wolf SHORAD system would need to come with additional vehicles - probably one to carry the Type 910/911 radars and another to carry some sort of surveillance radar (possibility of these being combined).
Yes that would be the case. I think that the Radar Vehicle Claymore built for the land based Sea Dart Launch System would be similar, so a similar sized, if not the same vehicle, with the same role.
Could be another build that gets wildly out of control or ditched if too many real world facts collide with a quick Whiffer vision.