"Home-Brewed" Dyno Results Added Photo

Is that a lot of hp?

My 70 Charger calculates out to 503hp (at crank) running an essentilaly stock bottom end , 916's ported , 550 Crower roller , headers and a 6bbl intake.....
Ran 12.10 @ 116ish with 3.55's in Seattle.... 4000lb car

Just asking.....?