I looked forever to find one of these. I purchased this one through a forum member on here.
These are beyond hard to find.
I recently purchased 3 Alpha 2 machines , so I converted my Alpha Elite V32 back to stock and no longer need this.
Bally factory Alpha Elite to Alpha 2 conversion backplane.
This directly replaces (plug and play with your factory harness) your Alpha 1 backplane in a Alpha Elite V32 or V20/20 so that you can run a Alpha 2 CPU.
This way you can play all the newer Alpha 2 games on your older machine.
Asking $550 OBO
You will need a few other items not listed to play some of the Alpha 2 game titles.
Some things you may also need (not included)
Alpha 2 CPU,
Alpha 2 Ideck,
2.1 Audio card,
Video Topper.
Shown in the images are pictures of the board itself,
and Monopoly Millionaire (NOT INCLUDED) running on my Alpha Elite V32 Cabinet (NOT INCLUDED) That is also for sale on here.