Saw an ad on Craigslist yesterday. Guy was selling a flight box with a lot of bits and pieces, parts, tools, etc, in it. Including a goodly number of brand new glow plugs. Got it all for $40. Turns out there were 29 brand new, still in the package, K&B glow plugs!!! They are all a long #4520 with a thin arched idler bar.
Everything else was just icing on the cake.