Snowrunner: How to add mud tires and diff lock always on to Fleetstar, and some other adjustments

How to add 51" mud tires, diff lock always on, larger fuel tank, wider wheel base to Fleetstar. And how to revert back to original default Fleetstar. This is not a mod (not downloadable).

Test run: https://rumble.com/v51wbde-snowrunner-fleetstar-with-mud-tires-diff-lock-always-on-better-wheel-base-l.html

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