if you are looking for just the top because of the smaller throat/air cleaner mount. do what i did to mount mine to a hemi shaker base plate.i went to a salvage yard and found one one off a 60's buick and one in thier carb pile.then bead blasted both tops and trasfered floats,metering rods etc. they worked out just fine.i also had to make the choke linkage from auto to a manual because it was reversed on early carters.just a thought. thease carbs were used on a lot of 50's 60's cars buick,cad's etc.