Which O2 extensions do I need for longtubes

1995 CA A4, has dual cats, OBD1, and two O2 sensors.

What pin style connection and length do I need to get? I'm going to do Pacesetter LTs.

You'll need the flat connectors. The 12" length did the trick for me.

the o2 sensors that r in the stock manifolds are right next to ur valve covers right? they r that weird thing sticking into the manifold right? lol just wanna get things clear lol.... also wat size are the stock header bolts?

You'll need the flat connectors. The 12" length did the trick for me.
I think that's OBD-II, isn't OBDI square?

I went with 24" and I'm just going to ziptie them to play it safe.

I think that's OBD-II, isn't OBDI square?

I went with 24" and I'm just going to ziptie them to play it safe.

The flat connectors are for the front 02 sensors, the square connectors would be for the rear 02 sensors which are on the OBD-II f-bodies.

The flat connectors are for the front 02 sensors, the square connectors would be for the rear 02 sensors which are on the OBD-II f-bodies.ah, I'm running no cat so I'm deleting that O2.

ah, I'm running no cat so I'm deleting that O2.

Yep, in that case, either PCM tuning or the plug in 02 simulators, which happen to be the square connectors, will do the trick.

Is it possible just to splice in 12 inches of extra wire into the O2 sensor harness? or is this a no-no and can screw up the signal?

Is it possible just to splice in 12 inches of extra wire into the O2 sensor harness? or is this a no-no and can screw up the signal?

You can splice the harnesses, but it really is not a good idea. It has been shown to create problems.