I have a plug and play Pertronix billet on my 440.. My old distributor was worn out and so my options were open. Only negative was I had to grind on my head a little as the base of the distributor was to wide to fit.. I went with the black cap with the female ends to look somewhat stock, but you can use a red cap with the male ends. I like the idea of a bearing inside the distributor instead of a bushing.. Clean, simple and it works great....

Someone was having a closeout ( bouchillon??) on the MSD plug and plays.. $99 I think?? a steal...