It seems one of these threads pops up once a month around here.
Do yourself a favor and walk away from the Mustang magazines, or really any of the brand specific mags, period. If you want tech that wasn't written by someone with an 8th grade reading level, go for something like Hot Rod, Popular Hot Rodding, Car Craft, etc. Any of the brand specific or new car magazines are written by journalists, not necessarily high level car guys, and are highly motivated by sponsorship and trendy fads.
I remember one of the final straws for me was reading an article in a Mustang magazine where the author admitted that he thought "degreeing a cam" was just lining up the dots on the timing set. Someone with that level of tech knowledge should be making Starbucks runs for the REAL writers, not writing engine build articles themselves.