Echlin #VC-1810 advance can or equilivant

Actually 10:8 to one. My 340 is 10to1 . I have a MSD 8680 Timing controller with Dial in ashtray with an MSD 6A Box. It failed 2 months in. I wired my stock back in. Msd fixed it so I am going to rewire harness for both so if it fails I wont be stranded. I will mess around with the can but also increase or retard a little on the hyway with the dial to see what she likes. Thanks for the info .