Flowmaster AMT Catback inlet size?
 

Does anybody know the inlet size for the Flowmaster AMT catback? I hate the tips for the ground effects and want to change it to the SLP square tips. I assume its a 3".

Should be 2.5" inlet in order to hook up to the factory mid-pipes. However...the overall cat-back is a 3" I believe so if your asking the inlet on the tips it should be 3".

You dont want to know the inlet size... you want the outlet size but whatever...

The inlet (at the cats) is 2.5" for about 6" then flares out to 3" and is 3" all the way back and in and out of the mufflers then flares out again to 4" at the tips for the NON gfx kit. So your answer is 3". I think the gfx kit is just 3" without the 4" flare and chrome tip. If you have the GFX kit from Flowmaster you want a 3" tip. You may have to weld it on if the tip is 3" OD. You'd need 3" ID.

I just went out and looked ;)