I just picked up a 1980 6 horse Chrysler (used twice). I found an impeller on ebay for $29 which is a good price. There's still one left at the site. Be careful; apparently there are three different types of lower units for motors of that era and two different types of pump / impeller. My part# was 47- F525065-1. Try a google search for that number. Let me know if you need more info. Threre is a site that shows all three types of lower units - let me know if you need help finding it. good luck
