Fuel tank sending unit

I just installed a new one on my '68 Dart 2 days ago that I bought from someone here on FABO (new in the box).....I figured it was a Mopar unit, but after opening the box....I kinda had my doubts. It just didn't quite look like a factory replacement, and it was inexpensive. I hope it doesn't crap out. I haven't filled the tank more than 1/8 yet.