There seems to be two categories of kits in terms of profile of the front fuselage:   1) deep: distance between the fuselage bottom and top canopy is bigger than in the Grumman drawings. Hasegawa... Fine Molds... Since Fine Molds was founded by former Hasegawa employees AFAIK, similar reference material may have been used.   2): slim: canopy curve and bottom fuselage  match the Grumman drawings. Academy...   GWH... Th