Try "The Brillman Company"; they have Packard 440 just like we used in the old days. They also have "Rajah" spark plug terminals. As to condensers, the supply of good Mallory "Trash Can" condensers seems to have dried up. All that I have seen on eBay over the last year or so had splits in the case, which does not portend a substantial life. Because of this, I am reproducing an analog of the old Mallory brass condensers, that have a fabricated brass case and contain a modern "severe-duty" capacitor. These have been in field test for about two years, and while we had to make one revision to allow them to survive on cars with "dirty" power (generators and solid core plug wires), we now believe the units to be extremely reliable.
They are available for $50 plus $7.15 shipping. PM me if you are interested. Here's a picture :