NOS 440 intake questions

[blown motor]

What does the TA after the pentastar indicate? Does the 1 at the end of the number mean it's a 71?

[anlauto]

It's for a 1973 440 and it's been painted so it's hard to believe it's "NOS" maybe an NOS takeoff ?

[blown motor]

What tells you it's for a 73?

[anlauto]

I looked the part number up in Galen's little white book.

[blown motor]

Cool, thanks.

[Chryco Psycho]

Which carb bolt pattern does it have , 73 should be a spreadbore for the Thermoquad carb not a squarebore

[blown motor]

Squarebore.

[Chryco Psycho]

Actually it is a spreadbore intake for the Thermoquad but has an adapter to use the square bore carbs 

[blown motor]

I looked again. You win! I'm so naive. 

[Chryco Psycho]