Alex wilson

I have a 350z 2007 with a vq35de I have just purchased japspeed sports cats from japseed themselves. after looking at my current regular cats that are fitted I noticed a 02 sensor in the middle of both cats. There is also a pre cat sensor mounted on my exhaust manifolds ( not on the cat section ) the new sports cats only have one cat each side on the lower part of the exhaust with two 02 sensor mountings. these mounts are in a completely different place to where mine are currently. i was wondering if anybody new about this have I purchased the wrong cats ( EVEN THOUGH MY CAR IS A VQ35DE ) please help…..