All WBO2 sensors will work. Just get the mixture vs. voltage chart and use a voltmeter to figure out where you are.
You need to connect the sensor to power (to heat it) or drive the car hard to warm it up.
Since you don't have an O2 sensor now you would need to weld in a bung.
This stuff looks good but maybe expensive, it'll get you started....
http://wbo2.com/
or
http://www.innovatemotorsports.com/products/lc1.php