Tecumseh Racing's Jerry Romanick makes adjustments to their small-block MoPar test mule, while Thrush's Peter Roberts digs through the mounds of mufflers gathered for these evaluations. Traditionally, ...
If you're old enough, you might remember when Thrush hit the muscle-car scene in the late-1960s with its Thrush Glasspack muffler. If you're old enough to remember that, then you may not want to ...
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