whats the difference between the $50 set and the two lesser priced sets....

i guess im asking ... Can I buy the two lesser priced kits and still get the same items as the one $50 kit?

http://www.oreillyauto.com/site/c/se...ima&vi=1211319

 

Well if you notice the $15 & $9 kit don't have the lower IM gasket to the heads like the $57 one.

 

I kinda figured that... what kit would I need if i had to replace the rubbe fuel line that runs underneath the intake?.....I am thining about replacing the valve cover gaskets and the injector o-rings.... just to have them replaced also