Best Aftermarket Suspension Set-up

tonysrt said

If torsion bars were so great, why did Ram Trucks go to Coil springs? I'm no engineer, but I think the length of the bars in some way make movement further from the front end to the rest of the car. Coil springs are limited to insolated control arms with rubber bushings.

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Not a great example, torsion bars can't work with a live front axle and anything is better than front leaf springs if ride and handing matter. Look at late-model GM trucks and Dakotas, they used torsion bars for packaging reasons so there could be space for the CV shafts for IFS and 4x4. Other makes (Toyota for example) use coilovers on their 4x4 trucks but it's designed in a way to make room for the CV shafts and is arguably a bit more complex/expensive.

By themselves torsion bars aren't much better than coil springs, it's just that the original Chrysler front suspension design was very good in terms of geometry and dynamics especially compared to GM and Ford cars of the same era. It can be upgraded in stages and comes very close to modern cars in terms of handling with the right mods.

If you need extra room for exhaust and oil pan, want to set the engine further back, be able to use rack-and-pinion steering etc. then coilover is the way to go.