Offshoreonly.com - supercharger dimensions????

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supercharger dimensions????

I have a B&M174 and i bought an intercooler "for it". Well it turns out the intercooler they sold me doesn't fit. Its not for a B&M174 blower. I am trying to figure out what size blower its for.

How far apart are the mounting holes on a 177 blower? how about a 250? maybe a 6-71?

I am pretty sure its for a 177 but i just want to make sure. FYI i bought it from a well know engine shop(<-----------look that way) who told me it was for a 174 blower. They offered to return enough $ to pay for shipping......

AHHH its for 250 not a 177 or a 174.

That still doens't change the fact i am pissed about being sold the wrong damn part and then having the well know engine biulder take it back. Yea its not very much $$$ at all but its the principle of the thing.