I'll have a rummage in my spares pile and see if I have any.
Have you had a chance to look through your pile and see if you have parts available?
I have plugged the front PCA from my 66332a into the broken 6632b and it works fine, if I use the broken PCA I can get all the buttons to work, so there doesn't appear to be any damage further than the VFD being shattered.
Further more to that, if the OP is willing to sell me a display kit with the OLED display I would be interested also. I know that it is possible to make one myself, but I do not posses the skills or time currently to make up a serial controller to control the PSU, or a display driver to take the serial feed to the display and run another display.