Hi Ian,
Glad to hear your going to start your Porter and that the images are helpful.

Doing some final "major" items before fuslage detailing starts, decided on the cowl hot air exits and cut them out. Mounted the canister pipe tunnel and hot air exits. You can see on the lower left corner of the pipe tunnel, on the firewall, the cutouts for the spark plug wire/ timing wire and the Cylinder head temperature probe wire. The ignition timing module is going to go on the inside of the fuselage under the pipe tunnel.
Filled in the turbine exahust ducts with expanding foam so there wont be too much drag from the big open cavity. Next in the list is .....sanding

Scott