Just recently installed the RacerX Intake Manifold and Fuel rail.
Absolutely please with the build quality/fit and finish. Runs and performing great so far, the power delivery is def noticeable over a stock non-ported manifold.
For anyone looking to go with this over to stock unit I would highly recommend it. Take your time installing it and if you get the billet fuel rail with it, plan out your fittings ahead of time (note that the exist fuel disconnect line is 3/8 female/female flexible line, you can either keep it or go-to a custom setup). Mocking it up a few times helps, especially with the fuel rail fittings. I chose to install the manifold first then the rail for easy access to to the bolts.