Welcome!
I can appreciate you posting here to help out some C guys since most of the 69 300 bits are not in reproduction and are one year only schtuff as well..
On the other side of the coin,when you announce you pulled the pearl out of the oyster,turned a running driving restore-able car into an organ donor,the purists here will be outraged.
I am not going to tell you what to do,but if it were me,since the 69 300 is still a desirable car, I would have flipped the car running/driving,make a better profit compared to parting it out.Then use the money to locate a 440 that has already been pulled,rebuilt or whatever.
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I want to send a message to the moderators-if there are such a thing..
As an example like other forums,new members should not be able to post for sale stuff on their first post.A forum I am a member of you have to post at least 10 posts,or be on there a certain length of time.
This filters out the organ pullers,demo derby guys,and questionable used car salesmen.