need o2 sensor advice

[badnova]

i am in the process of getting some of the pieces together to fire up the 5.3 i bought awhile back. one thing i noticed is that my harness has a male plug for the 02 sensor and the 02 sensor is also a male plug. I have called the guy that made the harness and left voicemail but was just wondering if there might be an equivelent 02 sensor with a female 4 wire plug. the current 02 sensor are delco 12589321.

any 02 experts out there that can give some guidance?

THANKS in advance