efi-diy " I'm still trying to understand the inliners as a group, and wondering why more folks are not using this engine. Is it the electronics that scare folks off? Or ?????"
I like just keeping it old school for now.
Plus, to my knowledge nobody has built a fast original engined L6 turboed street car. Glen Self had built a fast 4.2 turbo L6 that was installed in a 66 Nova,it's been done, http://www.youtube.com/watch?v=PUESVD-PnLo I'd like to be a bit different.
I am pretty commited on the current engine I have. I have most of the parts to build the short block. I have a 12 port head that flows good. I have always considered building one of these engines when they first came out.
As you are finding out,there is not a lot of support of aftermarket parts for that engine,even still to date. Everything almost has to be custom made it seems. Someday I might build one.