I have a 79 xs400 which I bought for next to nothing. That's the good news, the bad is that it does not have a title and being in California trying to get it registered seems to be a costly and time consuming endeavor. I am debating whether it would be a good idea to perform a frame swap.If I found a frame with a clean title I could perform the necessary modifications and take all of the components from the old frame and essentially have a different bike in the eyes of the DMV. Has this been done with an XS before? Now the question I am wondering is if any xs frame will do, I have seen several on ebay which seem almost exactly like mine, but I am worried I will buy the wrong frame and be stuck. Were there any big modifications done through the years? Will a frame from a Special, or one of the others work with my engine, suspension etc? Many thanks