i think he's talking about the cold air intake, not the intake manifold itself.
it may work, i'm still trying to see decent shots of the engine bays of both cars. if they have a similar setup ( ie tb & maf are bot one piece on both engines) they may be able to work.
I know on my body style the intakes for the 3.8/3.8sc were the same, but the 3.4 was different b/c the MAF was located away from the TB
hope that makes sense.
Also you should be able to make one on your own. Autozone sells 9or can order) alum. intake tubing, and you can get the couplers from www.hightempsilicone.com