Pro-M Fuel pump hanger tank mod

[Junbug]

I have a Pro-M Fuel Pump Hanger and the instructions show modifying the fuel pump hole to allow the fuel pump hanger to fit through. I just received my kit in January and the Pro-M hanger installs cleanly without any mods. I'm wondering if the Pro-M instructions are for a "standard" Mustang or another vehicle tank? I don't want to modify my tank if it's not needed. Thoughts?
pic of instructions below.
https://thefactoryfiveforum.com/attachment.php?attachmentid=181394&d=1678518771

[JohnK]

I was able to get the Pro-M hanger into the tank without modifying it. Just be careful when installing the fully assembled hanger not to nick any of the wires on the sharp edges of the hole.

[facultyofmusic]

Echoing John's comment above. The difficulties I had with installing the Pro-M hanger wasn't really the size of the opening but rather the baffles that get in the way during hanger insertion. I'd use a flashlight to look at what you're navigating the hanger into and then insert it with caution. It can be done without making that cut

[michael everson]

I just did one and had to modify the tank. Could be manufacturing differences. Mine was an FFR supplied tank.
Mike

[MB750]

I did NOT have to modify the tank, and I had a 155 lph pump installed at the same time. I did have to turn it 90 degrees CCW to start the install, but eventually could turn it to the normal orientation.