Posted November five, 2008 My manager said he is considering creating two or three these up, really should be much cheaper than $450. He is also thinking about doing a handful of custom made tuned duration manifolds, some for pressured induction and some for NA. Posted April 30, 2014 (edited) https://4ageengineforsale76530.idblogz.com/36076041/the-smart-trick-of-jdm-toyota-4a-ge-that-no-one-is-discussing