heres a vid of when i first got it running. yes its the n/a harness.
the bay looks nothing like this now.
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/317m4LEmpOs&hl=en"></param><embed src="http://www.youtube.com/v/317m4LEmpOs&hl=en" type="application/x-shockwave-flash" width="425" height="344"></embed></object>

the engine came with a boost sensor and afm hooked to hks intake filter.also on the ecu n374 there is a black box conn bolted on the side,whats that

yeah but if your gonna put the s5 engine in the s4 you cant use the s5 boost sensor or afm.
i believe the black box your talking about is the fuel pump resistor relay. the s4 doesnt need one as it sends 12volts to the fuel pump constantly.

I see the difference in the omp,couldnt i put the s4 one instead maybe bend the rod,or just block off and mix oil

yeah you could always premix. and yeah i just bought an s4 tyurbo OMP off ebay and swapped that bitch right on. i had to do some fabbing shit to make the lines all line up but that was probbably one of the easiest parts.
your still gonna need the turbo oil return tube from and s5 and s4 turbo.