One tube must extend, from each front down tube, forward
to the firewall or through the firewall
except in vehicles in
Improved Touring, Showroom Stock, Spec Miata, and Touring.
This tube, one on each side, must connect to the chassis at a
point not more than 12 inches forward of the front axle centerline.
Cars competing in Improved Touring, Showroom Stock, Spec
Miata, and Touring
may extend one tube, from each front
down tube, forward to the firewall, bulkhead or wheel well,
but not penetrating any panel.
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