More wire grooming and re-routing of ignition wires. Completed Alternator wiring…. Ran supplied wires all the way back to panel connector, to minimize any wire splicing.
It is very crowded behind the engine. I had to move the starter contactor, shunt, and ANL fuse previously. Even so, I was not happy with the spark plug wire routing and Alternator B-lead routing. I moved the B-lead routing to the left side of the engine and rerouted the spark plug wires. This gave me better access for the B-lead to connect to the shunt.
In retrospect, using P-Mags complicates things quite a bit. Don't install the accessories (contactors, shunts, ANL, Fuel Flow) until the engine is hung and you know where to locate things. I also extended the engine mount by 3/8" by using longer spacers for the top bolts on the engine mount (now 3/4") and moving the 3/8" spacers to the bottom. The top bolts need to be longer, but the existing ones can be moved to the bottom. If you use one of the top bolts as a ground connection, add an additional 1/8" to the bolt length (for a total of 1/2"). I used AN5-43A for the top left and AN5-42A for the top right.
I don't know if longer spacers will work (I haven't fit the cowling yet), but I would be tempted to use 1" spacers on the top and 1/2" spacers on the bottom (plus even longer bolts). The CofG will move forward, but that will not be too much of an issue with a FP prop.
Don't forget to move the oil cooler forward by the same amount (longer bolts & spacers).