Pretty cool. I like everything about it except,personally,the crossed up years don't fit my taste. I actually have a similar idea I've considered for my '67 GMC project,but more mechanical than appearance and more era-correct. It all started with the M22 I have for it from a '65 GTO. I figure the GMCs and Pontiacs were sold together,for the most part. Since almost all '67s had 6s,the vibe would be a truck done by a Pontiac wrench who would have a good connection to deals on cast-off Pontiac (warrantied) mechanicals,the ability to easily rebuild,and easy access to parts with a healthy discount. I did work for a guy that I could get a '65 389/3spd Bonnie from for the taking. See where I'm going? My budget is tight these days and I already have a built 327 ready for it,so I dunno. But,I do have a '65 GTO steering wheel,bucket seats,vacuum gauge in pod,and hubcaps!!
In Canada the GMCs had few differences,but the only cosmetic thing was the fender badges. Here's the only Pontiac pickup I know of,other than Utes: