I bought a 2wd 1998 ford ranger with a 3.0 the Y pipe is leaking between the pipes coming down from the motor and the o2 sensor is bad and broke off.

[bobbie58]

I had two 4wd pipes with two cats attached to them, can I use one of those pipes on a 2wd. and can i keep the 2wd cat pipe on it, with the other two cats, pa we need cats for emissions,