/lit/ - Literature

so i have this worldbuilding idea where the vikings go that teeny weeny bit more south and discover the mississipians, people worth raiding/trading/having contact with and with food worth eating.
The point of this is that they through some diffusion and preaching christianize the aztecs, but with new world flare.
When the aztecs travel from Aztlan they have a similar story, except it's biblically themed, maybe with moses appearing as the war god.
I personall believe the aztecs would love christianity, the last sacrifice, martyrdom, war. How different should their society be? I don't want to change their style or aesthetic, but i don't really know what to do about holy buildings, like they're still pyramids but on top is a chappel/cross, statue of jesus?