My 05 and 06 Tempest are old but the not low cross at all. In that sense they are very similar to most current karts.Any chassis that helps hook up the power will be an advantage. I think that's at least part of the reason you see some older chassis still being used in UAS applications. More flexible waist, right rear dependent, low cross, etc, all play into favor of hooking up big HP. Newer, stiffer chassis are designed around lower HP and a successful tire program.
Thanks and God bless,
Carlson Racing Engines
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32 years of service to the karting industry ~ 1Cor 9:24