Same job, same parts. You just have to built a new harness.
And 2000-04 are very easy, easier than the earlier 2.2L

The cool thing with the 2.5L is that it's a very solid block that can easily
be modified to 200-240hp without Turbo or SC. I have about 210 now and fuel
consumption is still in the 20. I said easily, well, that is not completely
true. It's easy for me. The problem with adding power and staying
atmospheric is that it's expensive. A good set of cam and/or modified head
are very expensive. I have learn a lot in th past year as to Subi engine
mod. I didn't share much because i didn't find any easy or cheap mod.

A WRX is the real cheap way to go. Sadly, for those who care about fuel
consumption, it's not the answer either. And i care.

The late drive by wire 2.5L are the way to go at 175 or so HP.

Still, at 7000-9000 feet all engine loose power. Turbo is the way to go.

Ben

On Fri, 24 Apr 2009 17:09:28 -0600, Warren Lail <wklail@GMAIL.COM> wrote:

>Benny Boy wrote: "That van as a new heart now... run's like a champ."
>
>It looks great Ben.  I'm thinking of upgrading my 2.2 subie to a 2.5.  Lots
>of extra work or is it fairly straightforward? (I installed the 2.2 myself,
>so I'm familiar with the general labor requirements.)
>
>I have lots more power than my 2.1Boxer, but I could use more!
>
>Warren in Santa Fe
>88 Westy