well I suppose that I could get away w/ the21100-61073, for the 40series. IIRC, there is no difference in smog gear/control between the 40 and 55. Anyone know different, please speak up. Thank you all.
Couldn't find it there. Jim, do you know which jet had the option? According to sor, the 40 and 55 had the same size primary and secondary mains. My guess is it would be the first slo jet or power valve jet. Which model had the "richer" jet? Thank you.