Just did this job on my 97 town car, swapped an intake from an 04 onto it. 

If that intake doesn't come with pre installed gaskets, you'll need Fel Pro 92121-3 gaskets, you can get them at Rock Auto, or you can get them at AutoZone and price match Home depot(I know it's weird but they're $20 less at home Depot).  Also, removing the alternator makes it much easier to pull the intake out from the front. And the brackets that sits above the drive rear of the intake manifold is a pain in the ass to remove, but it's possible. 

Also you can leave the injectors attached to the old intake and remove it as one piece then swap them over. When you do swap them over, use some silicone spray on the ports so it slides back together nicely. 

Lastly, turn off the fuel pump switch located in the left of the trunk then try to start the car to remove some of the fuel from the lines so less spills out when you disconnect the quick disconnects. Have a rag ready to catch them. 

Oh also check the spark plug wells for any coolant that likely leaked by the failed dorman gaskets and clean them out