I am having a set of custom tubular exhaust manifolds made for my car. The manifolds will be made of 321 stainless steel which is better then the 304 stainless used for the pentroof manifolds. In any case, these things are going to cost me a small fortune to have made, and if there is enough interest I will have a jig made so that copies could be made. The manifolds will be made to accomodate a Garrett T3 turbine housing. As some of you may already know the number of turbo combinations based on this housing is nearly limitless. No price has been set yet, but expect the price to be in the same range as a set of pentroof manifolds. Basically these manifolds will put Z owners in the same playing field as Supra owners as far as being able to pick and choose a variety of turbo specs instead of the off the shelf shit we are normally accustomed to.
So if you are interested post here. The jig will be an additional expense on my part, so I don't want to spend the money if there isn't enough interest.