All you need is low profile nozzle holders with splitting hardware and nozzles, the proper sized drill bit and an NPT tap. You'll want to drill in aproximately the same spot on all 4 runners. Keep in mind with a direct port its mainly about fueling and cooler EGT's. If you still want lower BAT's you'll also want to run a 5th nozzle pre-TB. I prefer in the intercooler end tank myself as it gives plenty of time to cool and evaporate.no point. Cheaper to just tap my mani as I bet the cp-e mani will be priced horribly for my wallet. And Jake made 533 on a PnP stock mani and I am not going further than him so whats the point. Its cheap to tap meth injectors into a mani. I am trying to learn how to do it myself as I have the tools to get it done. Just not the know how. And I am just running a DO7 nozzle now. But not sure when the time comes to use it for fuel. I know DO has a kit for this so probably whatever that uses