Certainly do so.
There is a similar thread about the
Toyota/Lexus MGR that ran 41 pages. You'll find a lot of the usual suspects there.
If the first post in the thread is updated with newer information, that saves it getting buried in the thread. People can still wade through if they want to see the back-and-forth. I tried to extract and summarize the above thread but gave up after six pages. There is also a Wiki, but I don't know how much it's used.
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I've been thinking this afternoon about an aircooled boxer VW mild hybrid. A CNC billet generator stand and serpentine belt would be a fine start.
There exist serpentine belt drives available for the bigger VW alternators, but this looks like it would need a sturdy base for the belt tensioner.
I don't see a way to attach the stock cooling fan, though.