First off let me say thank you to everyone on this website. I have just joined and it has already been a wealth of information and stress relief.

Several years ago I bought a 1965 GMC Stepside and found that it has a 305 V6 (with a 4speed T1 trans). This is not a typo. The engine is marked as such. I was told it was the original engine and that the only thing that was not original was the rear axle. The rear bumper also looks different than any other picture I have seen (I will get pictures soon).
I started to restore it and had the worst time tying to convince local mechanics I wasn't crazy, as I was looking for someone to help with some clutch issues.
Anyways I know this engine is real and have found out a bit about the history, but still have no idea about it really. Rarity? Is it factory stock? Was there a different bumper option, possibly a towing or ranch package?

Thanks for checking this out. Hopefully you are as intrigued by this as I am- I love this truck (sounds like a diesel engine when she's at idle)

Have a great whatevertime it is
R