Update:
Moving forward to the engine, I've cleaned it up as best I could and decided to pitch the kit exhaust manifold / pipes since they were totally wrong. They were not long enough for the stack version of exhaust to reach above the top wing, and they were shaped wrong for the side exhaust to have the molded on mufflers. I opted to scratch them and to make the stack version.
Starting with some strip stock, I drilled and added wire:
Then drilled the engine and fit it to the engine:
Then shaped the exhaust pipe:
After duplicating it for the other side of the engine, then a test fit to the plane:
The stacks are a little tall at this point so I will need to trim them down and cut off at an angle and then hollow out the ends.
Once I have everything the way I want it, I'll paint and install.
Thanks for looking!
John