Sub-frames are benificial to even a stock mustang. I'd put them on ASAP.
According to the NHRA you need a 6 point roll bar to run 11.99 or faster in a hardtop and 13.99 or faster in a vert.
You need a 10 point roll cage to run 9.99 or faster.
-Josh, aka the tireburner
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1987 Buick T-type
1998 HD Electra Elide
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