Hi,
Listing for a friend (who isn't a board member). He has his 1641cc twin port Type 1 engine up for sale on Ebay.
http://www.ebay.co.uk/itm/170944795944
Details are:-
1641cc barrels and pistons,
Engle 110 camshaft,
lightened flywheel,
Pertonix 2 electronic ignition (the expensive one)...