My 69-351w has the Edelbrock performer rpm package with minor changes but now I'm getting around to the ignition upgrades. My knowledge of ignitions isnt the best so I called msd tech support and he said I need the 8478 distributer. I've already got the 6al box and coil but they make lots of 351 distributers(mostly cheaper too) any suggestions? Car is mostly babied with the occasional heavy foot and possibly future run down the track. Thanks.