if you are referring to this type of distributor...
[ame="http://www.ebay.com/itm/MOPAR-DODGE-CHRYSLER-318-340-360-HEI-DISTRIBUTOR-6713-R-/330830750870?pt=Motors_Car_Truck_Parts_Accessories&hash=item4d070ca496"]Mopar Dodge Chrysler 318 340 360 Hei Distributor 6713 R | eBay[/ame]
No msd box is required...just hook it up to a 12 volt coil....you will have to by pass the internal HEI module to run a msd 6a
if you want to run a msd box like a 6A or 6AL....you want something like this distributor...needs external ignition box...
[ame="http://www.ebay.com/itm/CHRYSLER-DODGE-MOPAR-PRO-BILLET-318-340-360-V8-DISTRIBUTOR-WPM-PB-13-R-/190879871327?pt=Motors_Car_Truck_Parts_Accessories&hash=item2c7153b15f&vxp=mtr"]Chrysler Dodge Mopar Pro Billet 318 340 360 V8 Distributor WPM PB 13 R | eBay[/ame]
