Down in this valley is where the fuel injectors live. Had to take off the top half of the intake manifold to get to them in order to replace them.

The original injectors were rated at 220 cc / min. The new RC Injectors are rated at 550 cc/ min.

The Flyin Miata instructions cautions that there are small plastic spacers on the bolts holding down the fuel rail, that they are easy to lose and once lost hard to find. Didn't lose once but twice. And yes they are a pain to find.