Thanks for the help with mounting the wing tip missile rails.
Worked on the 300N pipe install today. Will post some photos since it is not stock.
300N and 200N stock Skymaster pipes side by side. The 300 pipe is 3/4" too long and much larger. Inlet ID is 120mm and exhaust ID is 110mm. Bell mouth is much larger.
I trimmed 1/4" from the exhaust end outer tube that extended past the inside tube and 1/2" from just behind the bell mouth funnel. Perfect fit now.
I bolted the bell mouth to the front of the pipe and taped aluminum mounting tabs to the bell mouth to mock up the pipe mounting concept.
Temporary wood engine mounts were cut to fit the B300F and mock up the engine and pipe mounting concept.
Engine mounts extend through the rear former to hold the pipe bell mouth mounting tabs.
Pipe bell mouth fits nicely between the engine mount rails and just aft of the rear former.
Good news today, John at Skymaster is sending me a new center tank with the hole in the proper location and some new ball studs to replace the ones I messed up.
Gary