I believe I found the right quad tips for 4.6is
 

Vibrant Performance 1304, 3.5" OD, double walled SS T304 , very good quality.

They'll need to be cut 1" in back in order to match OEM length and they'll fill out valance almost completely but with just enough clearance to allow for exhaust movement.

I respect the members here who prefer OEM but after these are installed I guarantee that some will think different about quad tips.

http://i156.photobucket.com/albums/t...ps7d6e83e5.jpg
http://i156.photobucket.com/albums/t...psbe79c1fc.jpg
http://i156.photobucket.com/albums/t...ps463e32a1.jpg
http://i156.photobucket.com/albums/t...ps1656eb83.jpg
http://i156.photobucket.com/albums/t...ps950be112.jpg
http://i156.photobucket.com/albums/t...ps85bb6584.jpg
http://i156.photobucket.com/albums/t...ps02701f9d.jpg
http://i156.photobucket.com/albums/t...ps4e8df496.jpg

Subd. I love how the 3.0 and 4.4 guys always go for the 4.6/4.8 oval tips and the 4.6/4.8 guys go for the quad look, haha!

Those tips look awesome nonetheless. I'm about to post up the "I found the perfect tips for my 3.0i" when I get my 4.8iS exhaust installed next week :)

I like mine better but yours may be the "less work" optio for those who still have mufflers on since the exit is two seperate small pipes, i dont have mufflers so mine are one in dual out.

http://i829.photobucket.com/albums/z...546BD28F7A.jpg

http://i829.photobucket.com/albums/z...D5E891C209.jpg

So.... are there dibs on your OEM tips? (If you're selling). :) Kinda want to retrofit some onto my Tubi's. Your quad tip setup will look sharp.

I volunteer you send yours to JB. His 1 of 27 deserves a sleeper retrofit as far as tips go on his exhaust :)

Which tips are those?

Allentown!

I like yours too and you did right by not going with SS or chrome since you have the silver color. I think I'll have mine stick out less then yours but that's matter of personal preference. There is still work to be done with mine as new tips won't match the OEM exhaust holes exactly.

I have one member who's asked me a while ago and I'll check with him if still wants them and then I'll let you know. Thanks.

If first guy doesn't want them I'll consider him as the next in line. I just want to be fair. I really need to remove them, clean them and post some close up pictures. They're in very good shape.