Posted November 5, 2008 My supervisor explained he's thinking about making a couple of these up, need to be much cheaper than $450. He is also keen on carrying out a couple of tailor made tuned length manifolds, some for forced induction and a few for NA. Posted April 30, https://toyota-4age-blacktop-engi66420.angelinsblog.com/34689254/the-best-side-of-toyota-4age-blacktop-engine-for-sale