Yeah, but who the heck runs a V8 in a Wrangler?  What, like maybe 5000 owners, tops, in the states?  Even if the 2.5 doesn't sell magazines (which I doubt, given that I'd buy Jp Magazine), Jp has no excuse for alienating 2.5 owners - its bad business.
JP isn't limited to Wranglers.  There are many CJ's out there.  Not to mention there are a lot of Jeep buggies out there too.  For the longest time Cappa was running his J10.  He sold it off last year I think.  It was even on E-bay.  If you want to sell a magazine or book, you sell it to the largest group of readers.  JP likes to focus on the bigger engines.  I've talked to a contributor and Jeep author and even though he liked the smaller engines, he knows he can't limit himself to a smaller audience.  He even thought of having a build-up but the idea was shot down by the head editor.
Although I know that Rick Pewe seems to never let that stop a good story.  When he was running JP, they had a few 2.5L's in there.  If you read 4WD & Sport Utility, they have amny 4 cylinder trucks.  Mostly Toyota's and Jeep's.  Over the years they have done many 2.5L build-ups.
So what am I saying...I don't read JP.