Dahlquist DQ-10 : Latest driver substitutes??


I just bought a pair of DQ-10s that need a bit of help. (specifically, a tweeter) I have looked up various threads on the internet about who has substitute drivers, but some of the answers are dated and there is much debate! And, there are plenty of negative comments about a couple of the "well known" vendors. These must be early production because the speakers are not handed, but one serial number apart. Came with small legs, too that make them look like a Quad.

So, should I just look for one original tweeter on auction sites or is there any one I can trust?

I have never owned a pair but I do like the sound of my one fully functional speaker, after I fixed the loose masonite on the woofer. The previous owner had them refoamed years ago and the foam was installed "bump up" instead of down. The woofers are stamped DAHLQUIST on the back.

Any comments from owners welcome. Thanks!

p.s. Are tweaks worth it? One guy claimed that he can turn them into "Class A" speakers.
hpims
Wow, speakersupply.com offers a ton of stuff. I'll keep them in mind if I can't find an original tweeter or decide to upgrade drivers. Thanks.
I've located a single tweeter to get the pair up & running. Based on results, I now have a few sources to contact if I wish to upgrade from there. Thanks to all for the responses.
Believe it or not I put in a Heil tweeter/midrange driver taken from one of the Ess box speakers with GREAT success. I did this because some others had incorporated the Sequerra ribbon. I also, replaced the 10 inch advent with 12 inch Infinity polypropelene woofers meant for car systems.....they fit exactly in the hole.....the back of the large magnet was 3/4 inch from the back of the DQ10 enclosure......unreal improvement. I enjoy these "backup speakers" more than my Infinity speakrs....better midrange.
Old threads never die! Which Infinity woofers did you replace the Advents with?
I need to replace those 12" Titan woofers that a prior owner put in there. 
Thanks.