eBay there is a seller that makes mic elements for mics like the D104. I am sure that these elements could be made to be used in other mics. Just remember you need voltage for and electret mic and don't have to with a dynamic unless it's a power/echo type mic. Which most use electret condenser mics as well. Build a mic would be the way to go. Board and all. Just use a nice large case from something like and old uniden mic or similar. Just use something that has the same response and impedance for what you need. Just type in mic element on eBay and you'll see a bunch pop up. Also might want to look into the W2ENY mic elements on eBay. They are supposed to be pretty good.
But truly why not get your learn on with radios? Not hard to do if you take the time to read some and ask questions as well. Find some parts radios like cobra 25's and 29's, hit up CBtricks. Or other sites that have schematics and service manuals and go for it. All you need is one of each of the radios that work as well to help guide you as well. With some effort you can fix a lot of radio stuff that isn't too badly damaged. That is if you really want to try that again. Mics are much easier to work on that is no doubt. Truly not much to them. I like to mess with mics as well and have found that it all depends on the persons voice as to which type mic to use. Dynamic or Electret condenser mic. Changing values of the diodes and such will also make a difference as you most likely already know. But there are many mic elements that will work with your astatic mics, like the ones I listed by the seller above. Or look at these. Even the workman dynamic may work for you. Hope this helps and have a good day.
These were all found with a quick search on eBay for mic element.
Also if you like messing with different mics, the magnum 257hp mics are a nice power mic with good audio. If you CSI find one pick it up and require it for whatever radio you like. They have a built in amp board that uses power from the radio, so be mindful of that. Or last but not least look at the RF Limited 2018 extreme and CR577 mics. They are another 2 that get awesome reviews as well.
Have a good one and have fun working on microphones.


I'm just a CB'er, what do I know???