I was wondering what you guys now about them. A buddy of mine just got one of there manifold packages for a z6 motor. The car went from a 16.30 to a 15.50 w the manifold so it works pretty good from that and the butt dyno feels great. I was thinking about getting one of there b16a 200 whp motors. Thanks for any feedback.

 

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They are slow, service wise. I have heard good about the products.

 

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I got a street D16Y7 head done by them, and I'm pretty happy with it... It did take a little while to get it back, but he did good work. 0.020" mill, port intake/exhaust and unshrouded the valves. I haven't had it dyno'd yet, but the butt dyno says it's certainly much better. It's also hard to say for sure where all the gains came from, ie. new cam, header, exhaust and head all at the same time.