Holley Carb Question

I picked up a Holley carburetor and Edelbrock Performer V6 intake manifold. The carb appears to have never had fuel in it.
It is a single internal float bowl design, manual choke, mechanical secondaries
Stamped into the main venturi on top of the fuel connection point are 2 numbers: L-7556, below and to the side is 3059. Printed on the back of the top casting is 3099
Printed on the Choke tower is 3080. Best guess as the ink is rather light
Primary throttle plates are stamped 255 and approx 1 3/8" and secondaries stamped 256 and approx 1 7/16"
I'm trying to identify Model number, part number for future rebuild kit. CFM anything else pertinent
Any Holley experts? I have done research and come up empty
I know the Edelbrock Performer V6 is supposed to be for the 80-84 even fire. I have the Offenhauser 360 for odd fire to put it on. The Edelbrock will be up for sale

 

Problem solved. Holley tech support responded it is a Holley 450 cfm Economizer which through research seems to have decent reviews. Any thoughts here

 

I've never known anyone to run the Economaster on a 4x4, but gut instinct tells me it should work well. Has a central float chamber like a Qjet, which is a good off road carb.
It uses the small Holley Weber jets, not the standard of one's, IDK what the availability is on those or any other replacement parts these days.

 

One other thought, that carb uses the Qjet bolt pattern and throttle bore spacing. You may need a spacer or adapter for the intake.