See what you're saying -- June for subscribers, July for online.
Still though, why do these guys never seem to mention the addition of fuel-system related components like adjustable FPR and 19lb injectors on the 2.5? Is it maybe because the aforementioned don't uniformly benefit all 2.5s, '88-'02?
that's because whoever wrote the article googled the information. He's obviously not familiar with the 2.5L, for example the roller rockers are the kit for 6 cyl (12 of them) and he says the stock stamped steel rockers are 1.5 ratio which is false, they are 1.6 just like the one in the picture.
In his defense the Ford 19# injectors will not result in any performance increase.
EDIT: he's got some wrong information about the t/b as well, the least he could do is to get the dimensions right, the 2.5L intake manifold is about 56mm opening and not 52mm like he says, he also talks about the top inside diameter with no reference to the bottom diameter, the 4.0L is 55 to 56mm there (seen both) and there is no need to increase the manifold opening. Going to a bored out 60mm or with the increased 62 to 64 mm t/b bore you will need to bore out the manifold as well.
also shown in the first picture was a hot air intake with no screening from the engine bay where all the hot air from the exhaust and radiator reside, pretty poor advice if you ask me.
All in all sound and looks like an article put together in a hurry from their older issues and probably information from other sites readily available on the internet.