will it fit on a z6? i've got one and it's a 4-2 manifold with a 2-1 downpipe. gonna go try.

 

It'll mount up fine, but note the 02 location
it's moved up closer to the exh ports Vs. the Z6 at the collector
If you're keeping the Z6 collector, then just leave a bum 02 sensor in the D15B exh mani

 

i dont' have the z6 manifold. i used the one off of my d15b2 and just spent two hours, a can of pb blaster, a sledge, screwdriver, drill, and many foul words getting the o2 sensor out of the jdm one. did you notice any gain from it? if not i guess it will be more of an aesthetics thing. it definatly looks better.

 

i forgot, thanks.