Okay...you show people your nice stuff and then you want people to donate good parts to you for the shipping cost. Doesn't this sound strange to you when you say it out loud? Most parts that people would give you for free may not be worth shipping charges. Are you looking for any type of parts in particular?
For instance I like swapping license plates...I send you a Texas plate and you send me VT plate. So is there a certain collection you are wanting...shifters, Slant six blocks, /6 manifolds, lug nuts....I think you need to narrow it down.