i went to order my o2 sims from summit just now, and i dont know which one i need, the 97-2001 or the 95-96 one. i called and they couldnt give me an answer and they said to check if it was a 4 point. i went under and it is hard to get to and i dont have the time really to pull things to get to it to see. i was hoping someone had a quick answer. i figured 97 would be different than the ls1's.

 

Why not just get a tune and have them programed out for $125 from madz28 and gain some power in the process?

 

then do i just block off the o2 bungs and leave the sensors unplugged

 

Yep. You are removing the rear O2 sensors right? ... because you need front O2 sensors.

 

You don't need to block off anything, just leave the 02's in there. And yes, I hope you're talking about the rear.

 

all the O2s are 4-point, its the design of the plug that matters, fronts are flat-4 the rears are square-4. Ive got a set of sims that i dont need because i did an OBD2-OBD1 conversion and had the rears removed, they have been on the car for i think 7 months, they still work perfect they are just a little dirty. $75 bucks, they were $125 brand new.