Okay folks, I'm trying to select a carb for my 470 in my '71 Charger. Here are the specs on the engine:

470 ci
10.0:1 compression ratio
440 source CNC ported aluminum heads

Hughes camshaft: .598/.606 lift, 242/246 duration at .050, 108* lsa (1.6 rockers included)

6500 redline

Headers, 2 1/2 duals
should weigh about 3600
auto tranny, 3.91 gears

mostly street use with a few trips to the track per season.

I'm looking for a vacuum secondary, electric choke.

Suggestions have been the following:

850 holley dual feed 4150 (80531)

870 holley street avenger (80870)

770 proform street series (67258)

What are y'all's thoughts on this?

Thanks in advance!