I have a FFII on my car. I think my next step is to drop the line pressure with the shims as outlined above and see how I like that before taking the plunge for a FFIII box.

By the way I did see one poster on here talking about having a FF IV box some top secret super special box. Never asked them about it.

Anyone have a FF IV box how do you like it? Must be a prototype deal or maybe its a FF III run at 800 PSI?