sources for part numbers

[solodon]

Hi, there have been times when I'd like to find part numbers and don't have any sources to look at.  While calling Luke and asking him so I can price shop is an option, I feel guilty when I don't buy anything.  Luke is a great resource but there have to be others (not people) that could be searched.  Thanks for any help.  Don

[Dave5Cs]

A parts manual helps. You can find them on line, sometimes ebay, some Bus websites offer them also.