help id fuel pump

[Ozyeclipse]

I need help
I was told this was a 255 pump
But I'm sure I remember all walboro pumps were stamped
Can anyone help me I'd this pump to me or looks like a stock you would get at AutoZone
It's definitely twice the size my stock gst had but this is in a gsx

.this are the only stamps on it

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[99ECLIPSEGSXDSM]

Looks like a denso pump to me

 

[Sitro4g63]

i believe that is the stock fuel pump, because the fuel catcher is clearly identical to the one in the Haynes repair manual. And have never seen one so similar, even aftermarket. Also the difference in size could be due to the way it sits in the fuel tank or just the theory of more weight of the gsx means more fuel pressure needed? Another thing, on the "gsx" model, did u have to take the fuel pump out from the bottom of the trunk space?
And the "gst" model fuel pump is taken out directly from the fuel tank, underneath the vehicle correct?

 

[AKfrankenstein]

Numbers say its a denso fuel pump. Which would seem to be a stock fuel pump

 

[Ozyeclipse]

Gsx came out of the trunk
Gst came under car,gst's have a lot more trunk space but a b*** to remove the fuel pump!