Help identify piston??

[69charger440]

Well time to further this thread!!!! I found a 6-71 Supercharger for $2000. This is a complete setup from intake to air cleaner, and all pullies!!! So this is what I am thinkin about going with!!!! What do you have to do to setup methanol system to mix with pump gas to ensure this blower will not detonate. I am not sure I will have to will my low compression (8.9:1), but I am sure someone will know for sure? How much boost could I get with 91 octane? I am just comparing pricing on doing the head work versus buying this supercharger! I know I will have to put a girdle and extra key way in the crank to run the supercharger! Just try to further my knowledge in this area!! Appreciate all the help you gals/guys have gave me!!