I took my car(2001 V8) to the dealership and they said the valve covers were leaking which causes me to need new gaskets, new plugs and coil boots. The valve cover gaskets will be covered under my extended warranty(47k miles on car) but the plugs and boots will cost me 350 bucks. Where can i buy some boots from and how hard are they to put on? This will be the forst time having to work on this car