Who makes a dependable twin turbo package for the Mitsubishi 3000gt?

I don't understand your question.. if you're asking for a tt package for the vr4 model.. check out 3sx.com. If you want a tt package for the non turbo 3000gt/stealth.. there is no kit, but you can add the factory parts an essentials from a vr4 to a non turbo, they bolt right on. Keep in mind this only works for the dohc engine not the sohc.