y7 y8 manifold confusion

[crxpower24]

Ok so i want to do the manifold swap into my y7 n i been doin my research n i kinda get the whole thing what in confuse is the iacv wire staff i dont know what am i suppose change or keep im gona go wit a obd1 ecu since im getting it tune i just need to know what manifold to use or whats the easier way to do this with out changing the wires can some body plz help.??

 

[AHHVTEC]

My y7 to y8 Intake Manifold Swap (pics) - D-series.org

 

[crxpower24]

I reed that 1 already im just confuse what manifold am i suppose to use a manual or auto since im getting a obd1 ecu