Thanks for the ideas guys. This is great. It's sometimes hard to get the big picture from all the sources of info.
I will build first in CAD regardless, that's just how things are done in my world, I cant imagine it will take significant time compared to a 3K hour project.
I see the deltahawk problems and will scratch that off the list.
Does anyone know of an automotive gas, well documented build with proof of success? Hopefully some Rotax examples?
Thanks,
David