yeah, I'm wanting to convert from the early 00-03 cargo cover (#2 in the pic) to #15 in the pic. I've been told from my searches on here that I need to update the two side pieces that the cover sits in...

#13's in the pic below. you can see the air slots in the one in the foreground of the picture. I'm just curious if this is true or not before I try and locate these pieces is all.