i am wanting to do a lot to my gator.just now sure what i want to do first.

what is the cheapest way to lift it 4"?????????

 

I would suggest a 3 inch body lift. The ones for the Expedition should fit. You might want to check with Performance Accessories first however. Then you could crank up the torsion bars for another inch or so. For the rear you could add a spacer to the coil springs. Daystar and others make various spacers so they should have some to fit a Navigator