hmm, the date was march of 2004 (03-04). That sounds good then, when I bought my superchip they told me it was a 04.5 if it was 325HP model...

 

When exactly did they switch 04 to 04.5? I thought it was around March production date?

 

No, it was made in 03-2004 or march 2004. sorry for not making that clearer

 

That would sound about rite then. as it is the 325hp model.

 

If it was made in 03 for the 04 model year than it was an 04. If it were made in 04 for the 04 model year than it is a 04.5. It's done this way becasue emmision changes happen at the begining of a calandar year.

 

So if his truck was built in March of 04, he would have an 04.5, and that's why he has the 325hp tag (meaning it's a 600)...

Makes sense. Thanks.

 

Finally someone cleared it up for me.haha Everyone told me its 04.5 but couldn't explain y.

thanks.

 

Okay, now I'm back to confused.

I have a mech. wastgate.