Here is mine it's a 3" dual flowmaster exaust with fenderwell exit header it has a twin on the other side. But if you must go inside the frame i would go on both sides of the t case depending on what pipe diameter you run you might have to dent the driver side pipe to fit between the tcase and crossmember. Or you can avoid all of that and run them under the trany crossmember but that looks like sh-t.