Engine Choices - Call for Data

The next "Review / Report Page" I want to do is Vanagon Engine Choices.
I'll model it after the Shops and Tire Review pages, but will also do a table that lists all the common approaches in a side by side easy to see comparison.
So .... all you Engine Guru's ... please send me your write ups, spreadsheets and other related data and opinions.
Everyone that has a conversion of some type ... please send me a review/report of your engine.