1998 navigator is sitting on the floor help

hello guys ian a newbee to this forum. i just bought me a 98 navigator, on the first ride home i notice the load vibration from the compressor pump. i rode it for about a month, now the compressor dosent come on no more, and the truck rear is sitting on the floor.

i just order a new compressor should get it thursday,

my big questions is sopose i convert out to the spring and shocks will the truck ride real rough??

also how hard it is to install the pump, och i mean getting the air hose back in the new pump, any thing to look out for.

thanks much

hello again i just install the new pump but it is not lifting the car up, i then notice where the two hose goes into the dryer air is leaking, why ? because the line is too short i need to extend the line so it goes all the way in. where can i get the extra hose and coupler from thanks.

Contact these folks:
http://www.americanairsuspension.com/EXPED%20&%20NAV%20AREA.htm
http://www.suncoreindustries.com/lincolnnav.asp