I believe the mufflers can be upgraded using off the shelf options from various aftermarket muffler companies like Magnaflow, etc.

The rest would probably have to be custom made.

For my needs, I really haven't found an issue with the OE setup. Although I know many wish for more power, I'm quite happy with the power of my SR engine. About the only thing I would want to upgrade is to make the fitment closer to the underbody so I can minimize clearance issues.

Off Roader
98 Montero with the Winter Package
89 Montero minty clean and reserved for overlanding trips or Cars and Coffee events
96SR (3.15:1 xcase, 35's) gone to the rust gods
96SR Build Up Thread
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