ok fine 2 questions... first... whats ths stock exhaust size of the 4.6/5.4L engines in the '06?

second.... is there any reason y a cat back exhaust from a 4.6/5.4L couldnt be used on the 4.2L?

may sound dumb but im just curious.....

 

the pipes are 2.5" on the 4.6 and possibly the same on the 5.4

 

sweet i dont need to be stuck with only one kit

thanx!

 

Just how hard is it to replace the stock muffler with an aftermarket one? imean just the muffler itself. I know that dam thing looks like its almost 3 feet long!

 

ya its not hard i know.... but seeing as i dont have acces to a welder i cant just weld new hangers onto a custom exhaust......

 

lilmustangboy, sorry If I came off the wrong way, I didn't mean for the post to read like that. What I meant is, that I am actually thinking of trying to get away cheap and just replace my muffler only.

 

I had my muffler replaced with a Magnaflow 12256 18". It cost me $140 total for the muffler installed which included a pretty significant piece of make up pipe with a few bends, 2 new custom hangers and a chrome tip.

 

thats about double for me as i am in canada lol

i will probably just buy a cat-back as its easier to install and less time consuming.....