5 point 11.49-10.00, weld in for sure on full frame cars but some unibody cars have gotten by with a bolt-in that has support plates. Unsure if bolt-in is "legal" but some have run them and passed through tech.
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Artie
73 Camaro 25.3 build TT LS in progress
67 Camaro
99 T/A
Other crap not worth mentioning
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