70 1bbl vs. 73 1bbl - any difference

[OldDart]

I have an opportunity to pick up a 1bbl for my slant but it is off a 73. Are there any differences, advantages, disadvantages of this carb over a 70? The pix are of the one the guy is selling. Thanks, greatly appreciated. :munky2:

 

[66aCUDA]

Looks OK to me. Would love a shot of underneath to look for corrosion.
There were some emission changes in 73 but you can just plug them off.
No major down side that I could see.
Good luck,
Frank