Hello everyone!
Two of the subj require replacement. The original one costs... it hurts even to think about.
Checking out the aftermarket, I found this: http://www.jcwhitney.com/magnaflow-50-s ... y2003g26j2 However, they do not give any warranty that the "Check Engine" light will not come back immediately after the installation.
So, does anyone have any kind of advice?

Additionally, where can I find the throttle body replacement? Dealers in my area do not have it for 03 SE

Thanks everyone for any help. I did not appear here for awhile, but have a perfect excuse - my two kids born 2011 and 2013. Hope to bring them to the trails soon.

I think your ok with the Magnaflow Cat it should work. Also i believe they sell just the cat so you can weld on if you get a good muffler shop they can probably cut it in for cheaper.

The trhottle body i would look at local junk yard or check out ebay and Rock Auto. If you cant get it from any of those try http://www.nissanpartszone.com/ with your vin number

Just buy universal o2 sensor spacer and pop it in 2 of them

Thanks, will give a try to Magnaflow.

[quote=mixxali4]Just buy universal o2 sensor spacer and pop it in 2 of them[/quote]

Thanks, I thought about that. But here in MA it might become rather problem than solution.