I visualized some of the issues with the cockpit that I talked about earlier with my "amazing" Paint skills. I'll also post some comparisons.
The left side of the in-game cockpit:
The left side of the F2A-1's cockpit, which was almost identical to the left side of the B-239's cockpit:
The left side of what remains of the last surviving B-239's cockpit. Note that some instruments and gauges are missing on account of damage from being at the bottom of a lake for 56 years and looting by a Russian mob who damaged the aircraft and stole parts of it when it was originally lifted from an East Karelian lake in 1998.
The right side of the in-game cockpit:
The right side of the F2A-1's cockpit:
The right side of what remains of the last surviving B-239's cockpit:
And finally the in-game F2A-2 cockpit, which is markedly more accurately modelled, complete with a working propeller pitch control, starter handle, etc., though it has several flaws as well:
There are other inaccuracies with the in-game B-239 cockpit as well, like missing labels, instruments and screws that are in the wrong places, etc., but that should cover most of them. You can make out the rest from the comparison images I posted.