Gsr mani help?

[REDREX]

i have a gsr in my coupe and my motor dont have the vaccum switch that will open/close the butterflies, and i also have a chipped p28. So wat im trying to do is save money and port my gsr manifold, and the help i need is if anyone knows a link thats shows it being done ported..etc.
ive looked before and found a site but now i can find it anywhere so please help. and also do you think its a good idea? thanx in advance

[Dead Bird]

if your chipped p28 doesnt have the wiring for the IAB's, which i doubt it will, you don't need to get the sensor.

You can either disassemble the butterflies, or remove the plate completely.