Greetings, After a recent (bad) wreck of my FC40, I am looking at parts. I have just noticed on ebay that there are a few generic GPS/compass units available. Are these ok? Alternately, there are lots of Naza lites for sale with GPS and LED modules. Could I buy one of those and use my NAZA v2 with those accessories? PMU, LED, GPS? My intention is to rebuild on either an F450 or F550 frame, quad/hex not decided yet. Aerial Photo and Video with the FC40 cam, and a later upgrade to a GoPro is the intention.