I'm running a OE single point style housing, a Petronix III & the advance I reworked years ago well before the FiTech.... FiTech says they don't know if the Pertonix III will work with their unit... I had it already, figured I'd try it & if it didn't work I have a old lean burn distributor which is a locked shaft/no advance that I could use with the FiTech timing control... Turns out the Petronix triggers the FiTech fine & I'd already spent the time getting the advance to do what I wanted so I left it alone...