I just buy a set of 4 2004 18" wheels and its come with the TPS. Im installing those wheels in my 03 because they are in better condition. Can i find and aftermarket receiver that can actually receive data fron the stocks TPS or can i go to infiniti dealer to see if they can install the OEM receiver system?

 

The OEM system uses the keyless door lock receiver for the wireless communication with the wheel sensors. The logic for the system is in the BCM, and I really doubt that the functionality could be retrofitted at a reasonable cost.
To me, it's the kind of thing that's nice to have if you've got it, but not worth going after if you don't. Just sell the wheel monitors and buy a good tire gauge and a tank of gas.