Very cool project at a UK shop (Retropower) - looks like these guys do some amazing work. If this link works there's an interesting discussion of the problems fitting a power rack and pinion in the Mark 2 - I know them all too well having spent the last year sorting the bugger.

 

I saw their videos and they are taking their Jaguar beyond the Callum in my opinion. The quality and performance mods are top notch!