Darn the Dog....your amazing and its a very kind offer but 16 inch wont cut the mustard (so to speak)...ive designed the frame around 20 inch wheels but thankyou so much for the offer...you rock
Tinkle..............your absolutely right i will need to buy separate parts and have them fitted by professionals.John Lewis suggested velomobil nl and i have contacted them and they have the parts i need.

will post again once i get back from my job in a couple of months then its full steam ahead to finish the project.