we had to do major work to get the exhaust over the rear axle.
3.5in pipes required we fabricate a whole new raised hump over the rear axle & into the boot floor.
Pipes were too large to run in the original location with my combo [which is a street car] I really need 4 mufflers to keep it as quiet as possible [which will still be noisy]. Pipe routing has a few twists (all mandrel bends) the use of V-Clamps for easy section disassembly.