There are differences between the ZT and 75 V8 exhausts the 75 has an additional centre box so they may have sent ZT info by mistake
As for the air filter this lives in Thors hammer low down so it is worth considering fitting a K&N filter as these are good for 50,000 miles so effectively fit and forget this is where it goes
I have bought one and will fit it the same time as I replace the damaged wheel arch liner, fit a proper horn and fit stainless steel mesh in my bumper K&N part is E-0945