Unless this is a drag race car don't even think of ladder bars!
Updated drop-leaf sprung cars are far better than worn out stock leafs and can ride and handle pretty well....
3-link, 4-link and Torque Arm suspensions are top shelf and are just as good on the street as the track.
I personally don't know a lot about IRS and what if any could handle 1k HP.
Really depends a lot on budget and fab skills.
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Tony
'68 Camaro
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