New cam for my 318

The XE256 is a good little cam for a street 318. I know because I installed one in my 1970 Valiant hardtop (Australian, same as 67-69 Dart) when I rebuilt the 318. Same combo as yours basically. Nice, slightly noticeable but smooth idle, good response, lots more power than the factory cam (albeit the engine was tired). Very happy with it.