Hello Chicken,
I can't give you dimensions, and I would suggest that you may make your own templates as I did for my BN2. First I would tape a couple of sheets of news paper together and put them up against the area I needed to make a panel for. If, for example, the foot pedal shafts were in the way I would crudely rip the paper until I could get it to lie flat around the obstacle. The I would put masking tape on the tears around the holes until I had the shape of the object. The I'd cut a slot so I could remove it without tearing it again The final panel would have no slots. You can get a good approximation of the panel shape this way. I would cut the edges as straight as possible, but not worry how accurate it is at this stage . When I had the roughed in shape I would remove the piece and transfer the shape to a piece of heavier card stock type cardboard. Then put that in place and use a scissors to trim it to fit, or if you have trimmed it too small, build the edge back up with masking tape. When you have exactly what you want, transfer that to the thinnest plywood you can buy(which can be cut with a utility knife). Make your final panel and cover with a thin fiber (fabric store stuff) mat if the covering has no backing of its own, and then your choice of final covering. Any good spray on fabric glue is fine. Use the original sheet metal screws and countersunk washers to fasten them on, and voila!