1969 GMC 2500 V6 305L Question

[Alaska_Ryan]

I have a 1969 GMC 2500 with a V6 305L. Not really restored, it's in nice shape but I use it as a wood cutting truck. My questions:

1) It's a ***** to find parts because of the V6 305L. Every place I go insists (and I mean insists!) that I am mistaken, it must be a L6 because GMC didn't put V6s in 2500 until 19*** etc.,etc. Some conversations have gotten nasty. My engine is a rebuild because the first engine seized, but according the original bill of sale which I have, my vehicle came with a V6 305L. So what is the deal with this engine? Is it an odd-ball, special order, rare or what?

2) Can anyone recommend a place that stocks OEM replacement parts for this old of a vehicle? My local CarQuest/Napa/JCWhitney can't get me the parts. And a few other online stores I tried only sell high performance parts. I don't need a $300 distributor....

thanks in advance for any help....