[PhilcoPhan1936]

Compare your tube layout to determine if you have an early or mid chassis:


http://www.philcorepairbench.com/cathedralid.htm

If an early chassis (p-p 45's) you need an H-2 speaker.  A mid version (single 47) uses an H-3 speaker.

There is a guy on eBay that sells pretty good reproduction tube shields:

http://www.ebay.com/itm/PHILCO-90-TUBE-S...7675.l2557

You might also want to look for a pair of copper Mershon filter capacitors to re-stuff and replace the two modern replacements on your chassis:

http://mcclellans.com/Philco90Restoration.htm

John, Thanks for all the tips and info. As for parts, I have a pretty good source. Hopefully they'll have most, if not all of what I need. As I work on this, I'll continue to document it here.