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I formed the base for the case. Drilled the holes at the back to secure the cover in place, then I used a heat gun to warm up the plastic then bent it screwed it down the heated it again to get a good form to the base. The case is 6 inches wide. I could have gotten away with 5 inches, but I have the room on the desk and I wanted to make sure I had room for all 4 USB ports from the Subway. As well if there are other expansions to be added, I wanted to make sure that there would be room in the case for later.

Here is a picture of the A500 that will have the ACA 500. These are mods that I did a couple years ago when I had the VXL 030 and scan doubler. I had to make the extension because the VXL covered Denise. I added the fans to help improve circulation due to all the extra cables and hardware inside the case.