APPLIANCE 2801 CH2 App???

I bought a set of Headers for my '55 Chevy. They are Appliance headers and the one is a number 2801 w/ CH2. They have a Square Flange Collector on them. Is that 2801 the right application for a '55 Chevy w/ a Big Block Chevy in it or is that app for something else? I don't have an Appliance book, so if someone does and doesn't mind looking for me, I'd greatly appreciate it.

Thanks!!!

 

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