From what I understand, 35.
Comprising 3 prototypes from Moscow & 32 production aircraft from Kazan. Certainly until a couple of years ago there were also an additional 3 unfinished airframes at Kazan.
There has been a lengthy thread on FSM regarding this & it does not look good for her. Seems she has been left to deteriorate below the waterline for far too long & the required work is now massive.
Like all these situations, it's a crying shame.
Tamiya Acrylics work well, but have a limited range of colors depending what you do.
Vallejo acrylics seems to go down quite well these days & are of a pretty high standard, the both brush & airbrush very well; Vallejo
Some useful gun bay pics here;
F-14 M61
& Here;
More F-14 M61
Although not gun bay related, the rebuild of 159600 is covered in some detail on Primeportal, thought it may be of some use;
159600 rebuild