I'm selling a used Mallory Hyfire IVc CD Ignition Box #692. I purchased this from another v8 board member in an ignition package. This unit has a built in 2-stage rev limiter that is programmable VIA on board dip-switches. I have pasted instructions to this ad. Asking $75.00, ...... Free USPS priority shipping in continental US!! View attachment 355379 View attachment 355379 http://www.jegs.com/installationinstructions/600/650/650-697.pdf Larry