After fighting Mosquitos and the jungle out back the tank on my F15A is:
LENGTH 32 INCHES
HEIGHT 10 INCHES
DEPTH 12 INCHES
DISTANCE TO CENTRE LINE OF TANK STRAP (BOTH ENDS) 5 INCHES i.e. 5 inches from each end to the centre of the strap.
The filler is 8 INCHES from Forward facing end and 6 1/4 INCHES in length.
Hope this helps. PS No tank on the STBD side yet.
Ian