Dave, your engine has inspired me to go forward with my 1/16 scale Cummins engine. This project has been on my mind for years. My main question is what size sheet plastic are you using for the construction? Also, were the turbos hard to scratchbuild?
I commend you on scratchbuilding everything. Until I clicked on your link, I first thought you would use the fairly universal parts such as the air compressor, starter, alternator, possibly the turbo with modifications. You scartchbuilt it all from what I could see. Truly amazing work. Are you going to scrathbuild a transmission for it as well? anyway, watching this build has been fun. I love it.