1966 K10 LS Swap Contemplation

[AlaskaK10]

Hello Everyone
I am preparing to assemble a 1966 Chevy K10 4X4 originally was thinking of putting in a 292. However before I do that I would like to learn about an LS swap. Since I am starting from scratch I feel it should be considered. I have looked in the LS sawp area but have not seen any info on the 64 65 or 66 K10s having an LS engine istalled. Originally I was going with a 4 speed transmission but the newer automatic I think its the 4160? looks like a nice way to go. This is a 66 K10 stepside shorty so originality is important or maybe not?? I'm not thinking a modern motor is a bad idea if it can be a clean looks like factory swap. Not sure of transfer cases etc but seem by going with an automatic it would remove some of the complexity. I would appreciate any feed back on this.
Dan