ORIGINAL: WacoNut
#6 is from a Goldberg Anniversary Cub. #4 is a P-51D/P-47D? #2 I would agree is a spit canopy. #1 and #3 appear to be from pattern planes, you may want to ask in the pattern forum for those.
Anthony
I'm quite sure the 3rd is for an Aurora with the front bottom trimmed straight.
Kinda hard to see in the pic, but the front dose come to a point.
DM