Sending unit connector

[binnsmark]

Hey Folks,

I recently installed a fuel tank behind the rear axle in my 70 GMC long bed. The tank is from an 88 blazer. I used this sending unit/pickup:

Amazon.com: Spectra Premium FG12F Sending Unit...
If you look through the images you can see the top view of the pickup, and there is the little brass looking nipple on there that is for the sending unit wire. My truck lacks this connector. Anyone out there have any info on what the connector part number may be? The Sending unit is for a 78 K5 blazer.

Any way I can jury rig this with an eyelet or something?

Thanks in advance!