Hey guys, I'm sorry to bump such an old post but it has such good info as to what exactly I'm talking about I figured what the heck.
I (being a Lincoln guy) just acquired an 02 deville for about 10k under bluebook. However, it runs like crap.
It has a vacuum leak, I sprayed staring fluid around where the intake manifold meets the throttlebody and sure enough the engine surges. I'm really hoping this is the only problem with the vehicle, and want to begin repairs but I'm not finding any manifolds or plenum part numbers.
Do I need the entire manifold or just an upper or lower piece? Does anyone have a part number handy? Is there anything to watch out for on the repair procedure?
I really do like the car, it's comfy and nice looking. If such a small repair would make it run good, I'll definetely be keeping it.

Thanks for your help, any information is appreciated!

The Wew