And I came across an estate sale of a late aero modeler. I picked up a NIB Fox .46BBRC ABC for $30, and a Fox .19 for $10 factory test run only. The QC test run tag is in the 46BB box. The .19 is missing the exhaust baffle and linkage, though I'd probably want to find a muffler that will fit it instead. The guy also had an Irvine .25 Mk II Dykes ringed engine for $10 very gently test ran that I grabbed for a buddy of mine. For $50, I don't think I came off too bad.