i need to get the simms and 12"extensions whats the best place to get them from pacesetter lts 12" extensions is enough or need 24"

 

any of the site sponsors have competitive pricing.
Here ya go.. Scroll down a bit..
http://www.thunderracing.com/catalog...&vid=4&pcid=54

 

The 12" extensions should be more then enough. I originally had the 24s, but felt they had too much extra length to them so I swapped them out for the 12s.

 

so if u have a custom exhaust....say a x-pipe into glasspcks dumped where should u drill a hole for the o2 simms?

 

The 02 sim is not what you are probably thinking. It in no way represents an o2 sensor. It simply is a dummy device that plugs into the rear 02 harness connector and provides a dummy signal to the PCM. Scroll down the page on this link and find item #IZM993-1 and you'll see what I'm talking about.