Right, welL I am just back from seeing the yellow, 1978 car and it really is a cracker.  It has a really nice engine, Weber, trick exhaust etc and about 220bhp. Whilst the paint is a little tired, the whole shell is in extremely good, rust free condition. The saddest thing is that it is just out of my budget. I've just sat and done the numbers and sadly I wouldn't be able to offer its worth. If anyone is interested though, I'd be happy to pass details.
The seller knows his FB's and has all the OE parts, if someone wanted to remove the uprated suspension, brakes etc?  I cannot stress just how solid this shell is and what a lovely example it would be, with a fresh coat of paint. 
