Boden 3/8" -> 1,8 mm Beplankung

According to Classic Wooden Boat Plans, the Bullet was originally designed with a flat transom. While I don't want to accuse him of being disingenuous, I believe the transom should have a 13 to 16 degree rake. What few pictures of Bullets I have been able to find, all display an angles transom. Am I off here?

That's not really the structure of a Bullet. A Bullet is more of a stressed skin build. You are correct, the Bullet has a much more elaborate transom with an inset angled motor attachment

While the outer transom both port & starboard are 90 degrees, the center section somewhat inset was as 13 degrees.

I agree, the plans are for something that looks like a Bullett, but isn't nearly the same. For sure I'd make the transom look more original and figure out what the bottom really was and is before I started cutting wood.