the tomei one has correctly colored wires to connect to an sr20, but u dont need it, there are plenty of people here that know how to hook one up just using regular shielded wire.

also, i dont think j30 mafs are the same, i think they are sized comparable to maxima mafs or something. i recall scott saying to make sure the #s on the side of the maf say something specific or else the j30/maxima ones somehow are not the same and will max out way before a z32