Volunteering At Goodwill

I deal with the GW regional aftermarket specialists and I can say with 100% certainty that unless you can make a legit proposal to the people above the store location level, you will not have access to their cast-offs. They will want to be paid and they will want truckload servicing for all of their stores in your region from their distribution center(s). They likely have contracts in place for this kind of thing so you will have to deal with some sort of RFP/bid process.