So far, I've gathered the following:

The GSR, ITR, and Civic Si all flow higher gph than ls and sohc fuel pumps, correct?

Now, if you purchase a pump from someone, how do you physically tell you are getting an ITR or GSR or Civic Si, not a civic or integra ls? Will the pump have a part# or marking on it?

I'm really curious, I have a pump that is supposed to be GSR but I am having doubts.

anyone have pics or ideas?

 

Good question as I have yet to be able to tell them apart unless they are still attached to the base mount (which could still be switched). I have a 99 GSR pump in my 92 VX which came straight from the GSR because I took it out myself I've had that pump, my stock VX, a 90 CRX Si and a 91 CRX DX all side by side and there were no significant marking to tell them apart.

 

well ****. What about the base mount, is there anything significant other than shape to tell the two apart? i know you have said the 92-95civ base mount was different than the 94+integ because it wont drop right in, but is the 96-00civ base mount the same as a 94+integ?

thanks for the help villain, you tha mang...