Good Morning. I recently had an interesting conversation with a fellow who builds diesel motorcycles. I heard about him from the man who sells the engines to him. The motors are 20 HP V Twin diesels from China. The builder says they get 140 MPG. If you look at this link:
DieselBike.net Buy a Diesel Motorbike you will see two of Brett's creations.
He also knows the man who put a 10 HP diesel into a Metro.
The reason I bring this up, is that China may be a source of engines for some of your projects. The 20 HP twin would move a Metro much better than the 10 HP did in the above mentioned project.
I also see conversion kits from ACME for Trooper and Tracker small SUVs, but they require expensive engines from doner VW cars. Would it make sense to buy them new from over there?
Just my two cents worth. This information if available from alibaba.com.
Paul Scholand