I didn't like the little b/r sink our rig came with anyway so we removed it, got a new piece of counter, and a new vessel sink. This raised the plumbing up enough to accommodate our Jazzy. I took the cabinet and b/r doors off and stored them. Replaced the b/r door with a tension rod use a curtain for human privacy. :)
If your kitty is that stinky you might consider trying a new food. Our Gatsby (17 pounder) was a stinky kitty when he first came from the pound. Now, after a few months of Blue Buffalo Indoor formula he has a smell but it won't run you out of the rig. ;-D