Be a lot easier to narrow a longitudinal torsion bar setup than it would the transverse torsion bar setup.

For the longitudinal setup you'd section the K member and centerlink (could probably find a narrower cneterlink easy enough). For the transverse, you'd do the same but also you'd have to shorten the torsion bars.

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They say there is always the exception that proves the rule.
Don't be the exception.