Speed Demon Carb No. 1402010VE

Hi Guys, i´m absolutely no carb expert and i need your help. A guy offered me a speed demon carb no. 1402010VE, 750 cfm vacuum secondaries. Is this a good choice for a 408 SB around 9 - 9,5:1 compression that should rev to 6000 max.? (no race engine, maybe 5% track time)

I don´t know the differences to a Holley 4160 for example, maybe somebody with bigger knowledge can tell me about. Thanks!

regards Michael