Hey Mate
Will look forward to seeing that happen as that is the plan for me too.
Not too much on offer here in Oz but apart from the Marks Adaptor Kit, there's this guy also
Untitled Document
Either way if their wiring kits are simple and foolproof, looks like a whole heap easy to do.
Someone suggested picking up a VS Statesman with the supercharged V6 in it as a donor....I imagine that would putt along quite nicely and there's bugger all height difference under the bonnet.
Will post up what I know ( and find out) along the way of the build, looking forward to your ideas and input too.
For the Americans..Buick V6 Conversion