Oxygen sensor

[David's Plus]

I have a 1991 sho plus with a 3.0 and i need to get an oxygen sensor for it and advanced auto said there are two different ones, a 6 inch and an 8 inch. Is that the size of the line or the plug?? Does any one know what size i should get???
thanks,
David

 

[Sh03d]

That's the size of the line for the plug. It doesn't matter which one you get if you just make sure it doesn't rub on the exhaust.

 

[marvsho17]

I like get the longer wire for the rear bank.