same here. I think that the 5.2 and 5.9 look nearly identical from the outside though, they are both based on the old LA small block

 

Here:

 

yup the 5.2 and 5.9 look basically the same from the outside, there are very minor differences that most people will not be able to pick up on, hell idk if id be able to pick up on them

 

Really, I don't think I could even pick up on them other than looking at the TB intake ports and actually measuring them. There is a 2mm difference.

All the parts are the same basically put the heads are different bore and valves, as well as the crank (stroke).....blah blah blah.

From the inside they are different, but the outside good luck. However there is the label under the hood that tells you what motor it is.

 

Thanks for the pictures guys lol. I wasn't really being specific really. If it had a different filter I wouldn't have cared. Did those motors ever get fuel injection? I'm asking these things cause my buddy said his durango I guess got a swap in as a 5.9l R/T motor.

 

all engines ever put in a durango by the factory are fuel injected

 

I'm confusing myself it seems. Isn't the one pictured above carbed? Or does it just look like it?

Bad picture angle but the only one I've taken while under the hood. Valve covers are different and the air intake is different.

 

No carbs all 5.2 and 5.9's in the Durangos of all years are multi port fuel injected.
That fuzzy pic you have there looks like a 4.7 OHC to me. (No carbs on those either)

 

Should there be a little sticker under the hood that identifies what is in it? I know nothing about how to identify these motors.

 

On the 5.2 and 5.9 there is a yellow sticker on the front of the drivers side valve cover. Not sure on the 4.7, but the 4.7 is distinctly different as it is an over head cam motor, the round bulge on the front of the valve cover is for the cam drive sprocket... among many other differences.