Bought all the parts separately from different sites (searching for sales ;)). Prob cost about the same or less than the ECS kit.
Really, the only hard part of the service is the fuel filter. And it's more 'tricky' than 'hard'. Did the whole thing in under 2 hrs, and I'm not all that mechanically-inclined. I did have access to a lift, tho.
The whole procedure for fuel filter change can be found on Vortex.

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