3rz O2 Sensor difference

So I bought new upstream and downstream o2 sensors for my 2.7L. I got a Denso for the upstream and a Bosch for the downstream.

When I removed the downstream and compared the new with the old, I noticed that the wires are completely different lengths.

The new one has a rubber gromet installed in line as if it's supposed to go through the floor. You can see the difference in the picture.

Is this that big of a deal? I ordered one of the few listed on Rockauto.com that was spec'd for California emissions and downstream. https://www.rockauto.com/en/moreinfo.php?pk=501957&cc=1364712&jsn=16

Can I use it and then just bundle up the excess?

 

the problem is that once you install it and run it, it is yours and not returnable. Reading other posts some people swear by only Denso sensors where others have zero issues with non-Denso sensors. I guess it comes down to taking a chance with your time.