Grangemouth Heritage Trust has a fair amount of information, photographs and layouts of the original Central Scotland Airport and its subsequent transformation into a fighter and training station in WWII.
It's manned by a bunch of very enthusiastic & knowledgeable volunteers.
You'll find it at:-
Grangemouth Heritage Trust13A La Porte Precinct Grangemouth FK3 8AZ -
The trust are actually off the main part of the precinct, on the left through the gap between the shops opposite the Bank of Scotland.
See more at:
Grangemouth Heritage Trust
Unfortunately, their website seems to be down as I post this, but maybe it will be back up shortly.
Also, there is a replica Spitfire at the memorial to the pilots killed during training and on duty at RAF Grangemouth, on Bo'ness Road at the junction with Duke Street with the call sign of one of the Polish pilots killed in a flying accident & buried locally in Gransable cemetery.