Update...
Looks like the chassis is completely FUBAR'd!!! - Its been on a jig and the boys have been working on it for two days now and it ain't going to come right without a serious amount of cutting and welding...
Stuff It - New chassis time - Might be able to get something fabricated from scratch in a week to 10 days. At least it'll be properly triangulated and torsionally stiffer the existing one so maybe a good thing.
Been informed that one of the rear swing arms has dissappered after two weeks of trying to find it as well... Just gets better doesn't it?
On a positive note, the seller has kindly offered to fabricate two brand new swing arms (left and right) or supply a complete rear suspension system off their GT40 replicas to suit - Nice offer to compensate I guess.
Body still on track to prepped and painted by mid next week. With a lot of luck, I still might be finished in four weeks - so let's see what happens.