KZ750 Twin Exhaust compatibility (KZ400?)

Hey all, having difficulty finding a 2-into2 exhaust for my '77 KZ750 Twin I'm rebuilding. I came across a good looking 2-into2 off of a '78 KZ400 and just from the pictures, it looks like it would fit.

Does anyone have any information that would help me conclude if this exhaust would fit my 750 twin?

Here's an image. Thanks in advance

I'm gonna guess no, but that is just a guess. I think the 750-Twin engine is kind of tall & of course bigger. muffler systems typically don't swap between different engine groups. a 400 exhaust will probably work with a 440, but that's probably it.