Has anyone used these coil's, COP's?

Here's the thing: those coils will likely become marginal quicker than OEM. Even though you get a lifetime warranty, to actually prove that the coil became marginal is next to near impossible. Marginal coils kill cats. OEM cats are over $1k... aftermarket cats are around $500. So short answer, yes the extra $225 is worth it.
 
If your in a state like I, Ca., you can't get an aftermarket cat and OEM cats are 1200$ from the local dealer by me.

Go with Motorcraft!
 

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