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PCA Member since 1988
Join Date: Feb 2018
Location: SW Washington State
Posts: 4,638
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Jeez, the stuff people will spend money on...
Looking at that "billet" piece as an engineer, I can't see how it "stiffens up the chassis." As a separate part, it's obviously stronger and stiffer (and heavier), but it still bolts to the body at only two points--at the ends. It holds the torsion bar ends and resists their torque with a 3-ft. long I-beam section. The amount of deflection of that cross member is minuscule relative to the body. The billet piece just makes it more minuscule.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners.
Cars are for driving. If you want art, get something you can hang on the wall!
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