Quadrajet Question

I have a quadrajet carb with the following # on it 17058253. I would like to know what size it is and what it came off of. Thanks in advance Mike D.

 

From this page: http://www.recarbco.com/technical/rochester/qjet.html
It looks like it could be a 78 Olds carb, but that's all I get from it.

 

78 BOP but gets some other opinions.Sorry I meant 78

 

78 Olds 350/403, not sure if 750 or 800cfm

http://www.carburetor.ca/carbs/catalog/Oldsmobile/index.html

 

LOOK at the primary venturis. Easy enough to SEE what size the carb is.

http://dyeager535.topcities.com/qjetidentify.html

 

Thanks much guys. It has the bump so it looks like an 800CFM unit. Mike D.