Hi Steve,
I was searching for some details myself for a bracket that would suit at 42px60 - try this link :
http://www.panasonic.com.au/content/...es/F000928.pdf
I seem to remember finding a PDF by accident whilst running a Google search, it might have been on one of the Panasonic international sites.
Anyway, the PDF detailed above has a photo and some drilling dimensions.
I hope this is of some use!
Andy