Help whos exhaust manifolds are these?

[T.S.U.Filmz]

I bought this motor and it has triple pipe exhaust manifolds on it. Are they slp, pI, psI, aaen, bender ‍♂ Not exactly sure who's they are if anybody knows it would be greatly appreciated.

 

[MURDER YAMAHA]

Bender

 

[T.S.U.Filmz]

I knew someone would know