Hi Ollie

Not sure on your colour pallet but BB is correct if your staying on the lines of the original colours for the engine then Chevy Orange is the colour not the red.
As for the Baumr-AG engines I have a 2 stroke 5 in one pole saw, Hedger etc and it's not much chop, the engine goes ok but it's had little use due to the fact that the blades don't cut well and the drive shaft rods slip. The engine itself looks and feels cheap but it may be different to a four stroke 6.5hp as its most likely a Chonda copy. I would be reading up on Google for some reviews first and confirming shaft size as BB has suggested keep in mind the engine is the heart of the machine, do you think 6.5hp is a bit overkill for a 14"? And will it fit with the handle bars.

BS

I've got a highway to mow