OK folks, am just about to go flying, but I will be happy to write some stuff about the project here. I will need to check with the owners first if it is ok though. I will give you some details as soon as I've cleared it.
It is indeed a Wilsch diesel, and the aeroplane will be grouped when complete, so if you are Midlands based it's a fantastic oppourtunity to invest in some quality flying!
MS