This is a real VIC 20. I have built this with a later model VIC using the brick style power supply that also works with the C64. Although it should also be possible to do this with an early style VIC. This modification does not improve the performance of the VIC 20 in any way, but it does open up a lot of possibilities to the programmer. You could have a much larger bitmap for graphics, even bitmap buffering and page swapping, or a GEOS style operating system could be developed on the VIC 20. I have a modified version of the "Fast Assembler", which was published in an issue of Compute's Gazzette, (May 1986 I believe), that works on this modified VIC. This project is not for the newbie that has never picked up a soldering pencil before and you must be able to trace some of the circuitry on the VIC 20 board and cut traces, but it's all worth it. So give it a shot and enjoy the benefits. I would be happy to post pics, but I don't have a URL for them, so email me and I will send pics.