My $0.02 on the subject of condensers…. 0.22 mf capacitor will work fine in just about any ignition application from your 1957 Chevy 283 to most outboards. True the spec book may call for .15 to .19 mf for a particular motor but in reality, with the +/- tolerance on common capacitors being about +/- 10% or 15% one can see the possible range. Consider that the very high quality caps like the Vishay foil caps are rated +/- 5% on capacitance. Go ahead and install the .22 mf and I bet all will be good.
Joe B
