I only sell the more pricey O2 sensor for the Digifant system because it
already has the plugs on it and you can just plug it in.  The other one is
cheaper but if you splice this oxygen sensor incorrectly it will cause more
problems than it solves.  It is worth the extra money to eliminate the
potential problem.
My 2 cents.
Ken Wilford
Van-Again
John 3:16