I wanted to build an exact copy of what was in the magazines. I found all of the parts, some were slightly different. The MJE3055 power transistor came in a TO-127 package, The MJE3055T is now more common but comes in a TO-220 package. I made the board for the TO-220 package. (The TO-127 style cost me $15 the last time I needed one.) I got the Stancor PS-8416 (250 VCT) power transformer on eBay, two of them cost me about $25 including shipping. The seller, solderfume, has more for sale now, see eBay item 5807358404. I ordered boards for 3 units. I work with a guy who is restoring a 1957 Ford Panel truck that he got from his late uncle. This is a 3 or 4 year project. He doesn't understand why I restore TV Typewriters, 6800 computers and such. What good are they? Michael Holley www.swtpc.com/mholley