Darksoft has just released an updated hardware revision to his multi-game kit for the CPS-2 arcade platform. Functionally, it’s identical to the previous kit, so there’s absolutely no point in upgrading if you’ve already Installed one. That being said, many things about this were tweaked to allow easier installation, so new installs should go a bit smoother.
The price is $500 plus shipping. Here’s links to both North American and European distributors:
US: https://highscoresave.com/darksoft-cps2-multi-kit/
Europe: http://www.saveyourgames.it/index.php?route=product/product&product_id=54&search=cps2
More discussion on the multi can be found on arcade-projects (free account required) and installation instructions can be found here: http://www.mediafire.com/file/obv4fflp48fmq2m/Instructions_CPS2_Multi_Boot_v3.2.pdf/file