There was a shop in the LA area (maybe Ted will remember their name) who were "the" go-to guys on the even fire and odd fire engines when they were being used for racing....no idea if they're even in business yet but they built some wicked odd fires with turbo's that showed up at Indy for a few years.... It was a couple of guys from the old CAE company, my old pal Bill Weinkauf did some prototype machine work for them on the cranks and rods.... If one were to chase down some of their old parts !!!!!!!!!!!!!!!