im getting jet hot lt's are the 02 extensions needed? if so do i need the 24'' or 36'' extension?

 

Yes, I think I used the 24"

 

i can personaly tell you from experience I tried to cut and splice my O2's to make them longer with 2 sets and never could keep a good reading on the O2's I bought the extensions and all my problems went away, ( atleast in that catagory)

 

I used a 6" on the passenger side and a 12" on the drivers side.

 

Don't know what year your car is but if you don't have heated O2's I'd recommend going with them, especially with long tubes. I could never get my car to run right. Converted them to Heated and problems wen't away.