I have been trying to find the dimensional differences between the

F4U-1 / F4U-1A / F4U-1D

and

F4U-4

and

F2G

I know the length of the -1D series is 33 feet 4.125 inch

and the length of the -4 is 33 feet 8.25 inch and all external changes were ahead of the firewall.

The question is exactly where those extra 4 1/8 inches were distributed.

I am looking for the same kind of data for the -1 series to the F2G but have less information to start with there.

Thanks in advance.

- Ivan.