I've got a subscription to Muscle Mustangs and Fast Fords and they've had a lot of pretty good articles for the s197's. They test out quite a few aftermarket products. It's pretty informative. Of course you'll always get a couple articles for other Fords in there as well. I love the magazine but I really haven't read any other. Hope this helps.
i recieve m&ff,5.0,modified mustang,mustang enthusiast,and buy ford builder.out of all of them,for the most part m&ff,and 5.0 are to filled with ads and a lot of fluff.the rest seem to be more on the up&up and more truthful with the tech stuff and how to's.
I know all of them mags are filled with total BS. They lied about what was in my car and many others I know. I counted 9 total errors in an article my car was in.