As any Mustang owner knows, exhaust is on the very short list of initial modifications to be done to the car.  Typically the stock parts are removed & scrapped & the nice, new, awesome looking & sounding exhaust is bolted on & that is the end of it for most.  I thought that was my path as well.  As my car progressed & modifications kept piling on, some of the previous ones had to be changed out for more compatible parts.  In this case, I installed a Maximum Motorsports Panhard Bar on my 1993 Mustang LX Coupe & now my Bassani Catback would no longer fit due to interference issues.  According to Maximum Motorsports, their Panhard Bar requires an exhaust that uses factory type tailpipe routing.  The only catback exhaust kits I knew we had on the shelf that followed the factory routing were from Flowmaster.  After a quick browse of inventory, I landed on the Flowmaster 817213 stainless steel American Thunder Catback for 1986-1993 5.0L Mustang LX & 1986 5.0L Mustang GT.  It featured 409 stainless steel construction, polished 2.5" tips, & carried a Limited Lifetime Warranty.  Plus, as mentioned earlier, Flowmaster uses factory type tailpipe routing on their Mustang catbacks.

Once the car was lifted up & supported with jackstands, I proceeded with disassembly.  Removal of the old catback was pretty inglorious, so I won't bore you too much with that.  If your Mustang is equipped with an aftermarket catback simply remove the catback to mid-pipe attaching hardware, loosen the tailpipe to muffler clamps, twist the tailpipes out of the muffler, slide the hangers out of the rubber insulators, & you're done.  If you still have stock exhaust, your aftermarket catback was welded, or it simply won't come apart after you've loosened the clamps - get out your hacksaw or sawzall.  Cut the tailpipe a couple of inches behind the muffler.  This will allow you to snake the tailpipe over the axle & fully remove your old exhaust.

Starting out with the LH tail pipe, I snaked it over the panhard bar brace & the axle tube & slid the hanger in to the rear rubber insulator.
 

Then I grabbed the muffler & flowtube assembly, slid the clamp on to the "pipe stub" at the rear of the muffler, & slid the muffler on to the tailpipe.

Once the tail pipe was engaged in the muffler I slid the hanger in to the rubber insulator & loosely installed the mid-pipe to catback hardware & loosely snugged up the clamp.  You want to leave these "loosely snugged" so that they keep their own position, but are still movable with mild effort allowing you to get everything adjusted properly.

I slid my jack under the rear axle & compressed the suspension as much as possible without lifting the car off the jack stands.  I then followed the catback from front to back twisting & prying as I went to make sure there is adequate clearance between the exhaust & the frame, suspension, fuel tank, lines, etc.  At this point, I crawled out & took a peek at the position of the tip at the bumper cover & made sure it was satifactory.  A little more twiting & prying may be necessary if it needs to be moved.  An extra pair of hands for this step is typically helpful as they can hold the tailpipe in the desired position while you check underneath to make sure that all your clearances are maintained.

 

Once I had it where I wanted it, I tightened up the mid-pipe hardware & the tail pipe clamp.  Rinse & repeat for the other side.  Once I had both sides completed & tightened, my finished result was like this.  All nice & level & plenty of clearance.

Now I'm enjoying a nice new stainless exhaust that clears my Maximum Motorsports Panhard Bar, as well as everything else, perfectly.  Not to mention, now my Mustang has the "Signature Sound" of Flowmaster!