Update 3/12/16
New engine thermal simulation
engine thermal simulation for all engines
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In the upcoming weeks mod approvals could be slower than normal.
Thank you for your patience.
In the upcoming weeks mod approvals could be slower than normal.
Thank you for your patience.

Outdated The Ultimate Burnside Drag/Performance Package 2016-03-22
The Ultimate Burnside Performance Package (5.7L/7.5L and two transmissions and locked diffs)