Are pipes interchangeable between the WRR and WRX

I would like to buy a two brothers custom pipe but on the website it says that it only fits on the WRX

A lot of other websites mention that their pipes are interchangeable

Can I put a Two Brothers pipe on my WR that only mentions it is made for the WRX???

Thanks for any feedback

They'll fit, no problem.
It's the WR-250F that is different.

thanks its on the way but now i might send back the fmf pc and get the two bros pc