Hot Rods Flathead or inline SIX help- what is it?

Hi, I'm looking at an intake for an inline 6. I know that it is NOT for a Stude Champion or the 170 six. I also know it's not for a Chevy - GMC 235 inline 6. But What is it for?
The measurements from the outside of the bosses is 17 7/8". Perhaps it's a Dodge? Chrysler? or even a big Stude Commander 6. Can anyone here help? Many thanks!

 

I'd say Studebaker Commander 245 cubic inch six. I had an Edmunds intake one time that looked quite similar in mounting ears and dimensions, and that's what it fit.

 

MOPAR end hold downs we’re not straight.

 

Measure center to center of outer ports, & take more pictures.

 

Thanks. @302GMC. Center to center of outer ports is 15 5/16.

 

Mystery solved. It's for a Studebaker 245 inline six. Thanks "Heathen" for the initial tip on that.