XZ Upgrade kit- includes all you need to overhaul your original style Joe P. MBC while upgrading to the new XZ specs...... $14 shipped

Found this at www.joepmbc.com I've been thinking of getting an Joe P. XZ kit for my car as soon as I can get a boost gauge for it.

You can upgrade your joep mbc to the knob type adjustment. Scroll to the bottom:

http://www.joepmbc.com/products.htm