XIR headers

I was looking at the XIR headers and the pictures show it with a stainless steel downpipe also...does it come with it? here's the pic

http://xiracing.com/products/?cartID=2004110218060024.154.17.93&model=2000%2B+Eclipse+GT%2FGTS+V6&cat=Headers&productID=2&make=MITSUBISHI

I was also trying to estimate the cost...500 for the headers...300 for emanagement unit and bout 150 for the DYNO...and prolly like 50 to get the emanagement unit installed

So would a grande give or take a 200 be a good estimate to how much this will cost?

XIR racing says that it will give 23.3 WHP untuned? I am pretty sure that i need to get the emanagement so that my air/fuel ratio is not terrible..rite? Did anyone dyno there car fully tuned to see how much of a gain it had?

sorry for all the ?'s...just making sure i have all the facts just to be safe

i dont know if thats a downpipe that comes with it or not, but its not the one they just got finished making. here is a picture of that one
http://www.eclipseforums.org/article8.html

as for the pricing, it seems to be a good estimate except for the engine management install. i think it might be more than $50