First off, welcome. Not sure what kind of system you have but have you thought about replacing the baffle that is missing? (cheapest option, you could even make one)
You can spend good money on a system, cheapest is a Mac, but not a lot of us like them.
If you can find a used vintage Kerker, buy it!
Or have you seen Carpy's? (search on Google). And there is a guy in Cali that was making repro Yoshis.