Tunnel ram carb size?

I am bored and thinking of throwing my weiand Tunnel ram on my 496.I have a general idea for carbs but want some experience from those who have run them.
Bear in mind this is a heavy(4600lb) c body with a mild 496(500hp-575tq est)that runs on pump gas.
Does have ported iron heads that flow well.Solid cam(237*-242* @ .050),9.3-1 compression,1 7/8 headers and 2.5 exhaust.
3000 converter and 3.73 gears.
What do you recommend and why?
Only people who have/had them or who tune for someone who does please.

Well I run two 9379 Holleys that are 750cfm double pumpers. My combo is 451 4 speed with a pretty heathy cam. For your combo I think two 3310 Holleys (750cfm) would work great.

2 Holleys 4779 750 CFM double pumpers. Square jetting all around. No power valve. your combination should be ok with 70 all around. Dual carburetor set up likes less jetting than a single carburetor.

My combo is close yours and I have tried two different sets of carbs on my Weiand-1850(600) and 4224 (660 center squirters). The center squirters are faster and leave harder. I had to lean the idle circuit out on the 4224 but after that it was all good. I noticed all the hard core racers can spot them a mile away. I actually have both sets of carbs for sale if you are interested.

I also have run 2 4779 with no power valves sg jetted @ 78 with choke horns milled off. I also run them some sg jetted @ 80. Don't let anyone fool you they have unreal low-end throttle respond. And they don't look bad either.
I almost forgot the tunnel rams for some reason like a lot of CFM. I have been running tunnel-rams since the 80's. My new engine has a tunnel-ram with 2 Terminators(2950 cfm).
The mistake most people make on the Mopar wedge engine is they like a lot more CFM & fuel than the xxx brand engines.

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My combo is close yours and I have tried two different sets of carbs on my Weiand-1850(600) and 4224 (660 center squirters). The center squirters are faster and leave harder. I had to lean the idle circuit out on the 4224 but after that it was all good. I noticed all the hard core racers can spot them a mile away. I actually have both sets of carbs for sale if you are interested.

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another vote for 660's
I have them on my 572 Inch hemi, the engine has manners like a 318 2 barrel, until you mash the pedal.