Nah, no need for overkill if it's going to be N/A. Don't forget a valve cover gasket too. And an intake manifold gasket. I got my parts from OnlineMazdaParts.com and RockAuto.com, I highly recommend both.
Phen, I thought of the perfect analogy for my love of the FS-DE. It's like an ex-girlfriend. I was with my FS for about 2.5 years. I took good care of her and only used the best things. Then it was time we saw other people. So I'm dating a KL now and she's moved on and is with Josh now. I know he will take good care of her and she will take care of him. (tear). But you and Wes HATE FS-DE's with a passion. Haha