I am going to dump the exhaust at the axle. If you are deleting your fuel tank you can do whatever you want.
When narrowing the rearend and moving the Lower Links in 4 or so inches for the MINI TUB and bigger tires, you will loose the ability to run full exhaust out the back of the car. You can run the exhaust all the way to the bumper if you don't mini tub or do a relocation of the lower link bars.