I posted some pics in my blog from building a SID2SID board from 8 Bit Ventures. My nutshell advice is to use low temp solder and iron (20W) cause this thing will disintegrate with too much heat.
Other than that, it had good instruction (PDF) and was pretty easy to build. I got all the need parts from DIGIKey. Still need to test the 2nd SID...
http://www.amiga.org/forums/blog.php?u=827
yes my first SID2SID melted some, and radio shack gave me the wrong thingy and I had to redo a section.
It worked finally but I had to repair the board itself with bits of wire and it sucked a fat one.
Whatre you going to test yours out with? Prophet64?
