I would get one from you too , very interested in this For my gangbusters , My "Robber" sound is not working due to a bad MFC 8040 chip on the pre amp .
One tip for the guys with Midway Amp boards ,(larger Amp inside the rear door ) , put new IC sockets in for the LM354 IC's, this got the 'gun and explosion' sounds going again on my game,
A picture of the pre amp board (3 tracks) used on the Gangbusters which lives inside the 8 track player ...
Keep up the good work 007!

Gangbusters__(9)_(resized).JPG

Re Gangbusters ,
The game (should have) the 3 pre-recorded tracks ( Car , Robber and background ) also the 2 extra Gun and Explosion sounds when trigger is pulled , Explosion only sounds when hit is made on the car ,
hope this make sense ,
keep up the good work guys , This will bring a few old Midway games back to life .

I managed to get my sounds fixed , The Robber voices sound , It was a bad 555 timer chip on the Amp Board.
I replaced both and new sockets .
Originally I'd Thought it was on the 8 track pre amp board that's mounted inside the 8 track player .

Do you have the 8 track and sound amp boards Pacman?
Maybe you can repair yours if you have all the boards