I went in to my service manuals and this is what I found the 03 Evo has no LSD in the front and a LSD in the rear.
The 04 GSR was the same as the 03 but the RS has a Front LSD, both have rear a lsd.
05 and up all have a front lsd and Active Center Differentials both on the 5 speed and 6 speed.
I printed these off of my service manuals so you can take a look.
03 specs

Notice the viscous coupling in the transfer case

04 specs

04 With LSD

04 without LSD

05 specs

Notice the viscous coupling is gone and ACD is now in place

 

Already knew this thats why i almost bought an 05 instead of a IX

 

the 05 and the evo 9 are the same right?
march of 05 should be a evo 9
unless you ran into a early 05

 

almost, except the 9 has the MIVEC.

 

the switchover for model years is 7 or 8. i can never remember which. july or august. march of 05 would be an 05. (late model).

 

I saved this to my favorites.

 

Good info but its common knowledge to most of us here. Oh and The IX had some different gear ratios then than the VIII's as well

 

and thats fine if everyone here already knows it but i couldnt find a post in the search that had a break down like this thats why i made it. someting quick and easy to look at.

 

Thank you...this helps for differentiating the 04 and 05 models for us newbs!

 

i was glad when i realized i lucked out with my 05...and yes the evo 9 got a different 4th gear, they usually put the evo 8 4th gear into drag trannys since its a longer gear