91-94 SOS Cats on a 95?

I know the 94 cats dont have the adapter pipes but has anyone tried replacing the cats and adapter pipes with a 91-94 cats? I'm looking at these:

https://www.scienceofspeed.com/inde...ceofspeed-high-flow-catalytic-converters.html

And any idea why the 95's and newer cats are so much more expensive?

Thanks