I have a 1957 312 Y-block in my '56 Fairlane and I'm looking for the best aftermarket distributor for my application.  My Y- block is bored .040 over and I'm running a mild "street" cam from John Mummert along with a Blue Thunder intake and a 500 cfm Edelbrock carb.  Is there a quality distributor on the market made for these motors, preferably equipped with Pertronix?  Thanks in advance.