How come the 2.4L OBX header comes with a downpipe and is the same price at the 2.2L OBX header which only comes with the heads?

QUESTION:
why does ebay specify two different OBX headers? one says it will only fit the 2.4L and comes with a downpipe for aprx. $260 shipped

the other specifies only fitting the 2.2L and only comes with the heads for the same damn price.

is there any difference in the headers? here are links to the auctions.

"2.4L only " (comes with downpipe)
http://cgi.ebay.com/ebaymotors/06-08...spagenameZWDVW

"2.2L only" (no downpipe) $3 more for shipping.
http://cgi.ebay.com/ebaymotors/OBX-S...spagenameZWDVW

i'm asking because i have a 2.2L LS coupe but would like to buy the header/downpipe combo for the same price. if there isn't a differnce . thanks

 

The 2.2 header looks like it has smaller diameter tubes; also there is no cat on the downpipe in case you don't know.