Hey, how much room do you have between your exhaust and those fuel lines on the driver's side?

 

I have a few inches so i took some foil tape and wrapped it around the lines just to be safe. Not necessary though. You can see it if you look closely in the first pic posted below.

I dont have a y pipe but my drivers side bank comes accross behind my tranny crossmember as well and i have cats with mine.





my trucks underside isnt as purdy. lol

 

Were your collectors kinda pointing down too?
https://www.performancetrucks.net/fo...d.php?t=367163

 

hey agrief i know your pain. im making my own y pipe so i can have true duals. my problem is workin the pipes around all the 4wd stuff. i hope to have it all done in a week or so. ill post some pics when its done. well i hope everything works out for ya thou

 

i guess about an inch or so. the truck isn't with me here.

 

Beau, did you cut off the factory 2.5" pipe going to your car and attach a 3" pipe instead to mate up to the collector?

 

I'm gonna keep an eye on this one because I'm tring to do the same thing....only I'm trying to fit a pair of T-4 turbos AND a pair of cats into this space (and I'm 4wd too)

 

Yea i had them cut off the factory y whenever i went in to get my exhaust done the first time. Then i got headers and i cut the cats off the existing exhaust and told the exhaust shop to stick them on. Now that i have to cut the exhaust out of the way for the new tranny install cuz they didnt put flanges at the collectors. I bought the new dynomax muffler with the internal X pipe and we are running a pipe through the cats. I am really excited!!!!

 

I think if you run your Y like mine and use some of the smaller cats on the collector of the headers like Grippy's, you will be fine. I am actually going to be under my truck today taking out the tranny so I will take a few measurements for you before undoing the exhaust.