what can i do about the o2 sensor.the place on the xhaust where mine is has rusted out.an its that oval shaped sensor not just your normal sensor.where can i got that section of pipe to replace it when i do my exhaust this weekend?thanks for any help

most exhaust shops have the oval flange that you weld on to your pipe to mount the sensor. all you have to do is cut the hole for the sensor to sit in your new piece of pipe.

LC also sells em.
http://www.toyotacatalog.net/M1WebGear/ProductDetails.aspx?PartUniqueID=2362E691-B816-4A15-8C37-27821BE183F0

Just redid mine ,got the bung from LC, you will need a piece of 3/4'' pipe also.

what did you do with the 3/4 pipe?

You'll need to cut to length,& weld it between the LC bung & the exhaust tube.Keep the o2 sensor sticking into the exhaust tube the same as it is now!

ok awsome.can i buy that peice or just make one?the length is 3/4" how wide?

3/4" O.D. , the length will depend on how far into the exhaust pipe the sensor will have go!
On mine the bung was almost touching the exhaust pipe.