My daughter has a 1997 Jeep Cherokee with a 4.0. Can someone tell me if the muffler and tailpipe are the same for a 1991 and a 1997 Cherokee?
My husband seems to think so.

 

Someone may correct me if i am wrong but I am going to say no. the connections from the catlyitic converter are diffrent namely the flang. It could work if you cut off the flang and weld or make a sleve and clamp it.

 

I dont think so as Dynomax offers 93+ catback and 92- catback and at different prices. However I see places like Rustysoffroad offer a kit and says it fits all and another place same thing but quadratec sells tailpipes for different year ranges... so i am not definitely sure but i know that Dynomax sells two different year range muffler kits.

 

I can add some first-hand insight here.

91 had a 2.25" diameter pipe all the way to the rear bumper.
In 94 they reduced the diameter on the backside of the muffler.

In other words...any STOCK muffler after 94 will be a 2.25 IN and a 2" OUT.
Really messed up.
Also the 94-newer tailpipes have a bend at the tip-end whereas the 91 DOESN'T and the lead-in pipe before the axle "hump" is longer on the 91.


They say a picture is worth...well you know.



If you are looking to replace the muffler and tailpipe. This is a good mod.

I have BOTH a 91 Laredo AND a 94 Sport.

My 94 needed an exhaust system...
I purchased a Dynomax Super Turbo (forget the number but if you use the "WALKER MUFFLER" exhaust system diagram for a 94...its there.)
It had the 2.25 IN/CENTER and 2.25 OUT/OFFSET
Then I purchased a 91 tailpipe.

Just install everything as you would normally. Only modification is the front of the tailpipe needs to be shortened.
Stock hangers will work just as they would normally.

 

Wow, thanks for the pictures and info. That was really nice of you.