can you guys identify this carb for me

[VIPERICH]

number on top. list-4777-2
67stamped in ink on top
inside top/6r5534b


i wanted to sell this but have no idea what exactly it is.it came off my buddies stang that sat for a while.carb worked fine but did need a little adjusting that he cant do so he just got an eldebrock.can you guys set me straight on what model d/p this is.im guessing 600?
http://img.photobucket.com/albums/v471/viperich/media1jyj.jpg
thank you guys a bunch

[1967 Impala]

650cfm dual feed dual pump mech secondaries speed shop special

[VIPERICH]

wow thank you for the info/one more question for you.what should i price this unit for a fast sale.thankyou very much for your knowledge

[1967 Impala]

They are all over the place in price, but a brand new one is 350 dollars at JEGS so I cant help that way mabey someone else can

[VIPERICH]

67 do you think 100 is out of line or?
thanks again

[1967 Impala]

No, not for a working bolt on one that just needs some tuning