Ya'll may already know but I just found out he passed in January. I was wondering what happened to his section in Hot Rod Magazine, found out he got laid off in 2020.
The only magazine subscription I still keep is Hot Rod. Every month I went straight to Marlan's tech section before reading the rest of the magazine.
Here's a link to hundreds of his tech articles;
https://www.motortrend.com/staff/marlan-davis/

RIP Marlan, He was my favorite magazine tech writer.
Nolan