My IA said that twin turbo came from the factory. He claims only 2 came that way. He says you can see it in the engine log book.

I haven’t seen the log book. But I suppose you could write out a check for it in those days and they’d do it.


The Early Bird gets the worm, but it's the Second Mouse that gets the cheese.
Chandler, AZ KCHD
1973 A150L Sold
RV-6A Hela