You've raised a lot of questions in my mind tangential to your question. For the stock Van's mount, the Wolf remote filter comes with a back plate that fits just fine and leaves a ton of room behind the engine. But if you are 'pulling back' the 360, I am assuming you are fabricating your own custom mount. Why would you want to do that? It will not only change the W&B of the aircraft but also all the load moments, leaving you in unknown territory as far as the airframe is concerned. It also seems to me that if you can fabricate (or get one fabricated) your own custom engine mount, a custom machined back-plate should not be beyond your capabilities.
I'm not trying to be critical; I just (clearly) don't understand what you are trying to accomplish.
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Patrick Kelley - Flagstaff, AZ
RV-6A N156PK - Flying too much to paint
RV-10 14MX(reserved) - Fuselage on gear
http://www.mykitlog.com/flion/
EAA Technical Counselor #5357
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