I guess I made a mistake, from reading these posts (maybe I misread them) you can't change the radio installed in the Journey, or maybe it's just the hi-end ones with all the fancy doo-dads your talking about. I have a 2010 Journey but I didn't really care for the AVS (u-connect) system the had so I just got the basic 6 disc/am-fm radio with no satellite radio even, I forget the model number but you know the one. I wanted to put my own after-market one in, so I did. I did a lot of checking and finally setteled on the Pioneer AVH-3200DVD but the 4200 would work too. I didn't get the bluetooth model because I don't use a cell phone. I installed it with little effort, the biggest problem was the heavy gauge support bracket in the back, the one the OEM radio fit in to, I had to spread it out so the 3200 would fit through it, not a big deal though. I checked a lot of places and 99.8% said this a/v system would not fit the Journey but I checked the dimensions left, right, up, down, back etc etc... and all the numbers said it would fit, I guess no one thought to modify the bracket I mentioned. I also bought the GPS add-on for the 3200 and in the future I'll buy the backup camera too but I don't drive enough to warrant buying the satellite add-on and paying their user fees.
I put it all in and had it running in about 3 hours but keep in mind, I took pictures of everything before I started and made a plan on how I would do it before I even started, spreading the heavy support brace for the 3200 to fit through was the hardest part but it all fits like a glove now and works fantastic. I also added the DVD by-pass for this unit, for those that don't know what that is, look it up. I was going to have someone install it for me but they came up with installation fees that would make Bill Gates flinch so that's why I did it myself, and I'm glad I did, in fact, I would not recommend you letting someone else do it or even trying it yourself unless you know 100% you (or whoever) can tackle it, but, if you can, and if you have the basic radio like I did, it sure is worth it. The first time I took it back to the dealer for an oil change they made the comment about how much nicer this was, in every way, to the original radio I had.
So there you have it, the Pioneer AVH-P3200DVD/BT (or AVH-P4200DVD/BT) will fit, the new model is the 3300 & 4300 but it looks to be the same dimensions. I'll see if I can post a couple pictures below so you can see the fit. Hope that helps those looking for a change in radios.....
This is the radio I installed alone and in place:
This was before I installed the 3200: