Would installing a stock exhaust of a bigger atv in place of a stock exhaust of a small atv be a practical substitution to an after market exhaust?

For example would i see any performance gains ( or losses) if i installed a stock exhaust from a 450cc atv onto my 350cc atv. After rejetting of course.

Would it not make much difference? Possibly be worst then stock because of too much flow?

Any input would be appreciated. Thanks