In case anyone is interested, there is a dismantled Wessex on Ebay, No.200412045375. It finishes tomorrow, Sunday, and has no bids with a start price of £50.00. It is a single seater and most of the bits appear to be there. Can`t see a suspension unit and think the fixing triangles are on the body - certainly not in the photos. My guess is that it would cost about £400 to restore and would be worth a bit more than £450 completed, so you should not lose on it.
Cheers, DJ
Cheers, DJ