Which cross member
 

On the S4 na im missing the transmission cross member and have a s5 turbo trans but which cross member do I need? s5 turbo, s5 n/a, s4 turbo or the stock
s4 n/a?

From what I have heard the crossmember should match the transmission, thus use an S5 Turbo.

Are you swapping the TII into the primer gray car?

if you are using the S5 turbo trans you need the s5 turbo cross member,s4 is diferent

OK just make sure, No the TII is going in a blue 88. I turned the primered car into flat black and just sold it. I think im gonna need help with wiring though, is a s5 and i didn't asked to be it.

The S5 TII c/m will fit the transmission, but not the S4 na body. You're probably going to have to make something.

The c/m on the s4 would have had the mounting points with one horizontal and one at an angle. The c/m for s5 has them both on a horizontal plane.