Here are some pics of the GPS antenna shelf that I fabbed. I'm going with the parallel valve IO360 and was looking for input on clearance using either the B C 90 degree adapter, any other 90 deg adapter, the standard straight lyc oil filter fitting, or even having to pony up for the Airwolf remote filter. Looking to change oil every 25 hrs so ease of access would be nice. Any input would be appreciated!