Speedway G-comp suspension

273 said
The main advantage of coilovers if you were to run on multiple tracks is the ease of changing setup.

When I was thinking of getting into time attack with my cuda I was just gonna have different setups of torsion bars leafs and roll bars. There was only a few tracks and few races a year. But don't look like I'll be doing that now.

I think the "ease of tuning" argument worked a lot better 5 years ago, a lot of parts have come to market even in just that time, let alone the last 10 years. There are several brands of high quality, adjustable shocks that are readily available for road handling mopars now. And torsion bar selection has improved as well. No, there still aren't quite as many torsion bar rate options out there as for coilovers, but, how many do you need? The changes needed from one track to another aren't usually night and day, and realistically even someone that tracks their car frequently as an amateur wouldn't encounter dozens of tracks, probably just a handful. You realistically need what you would run "normally", then maybe a step up and a step down. There are already 1.03's, 1.06's, 1.12's and 1.18's available off the shelf. And there are a couple company's out there that will make custom torsion bars for you if you've got the money, Firm Feel will do it. For most track cars I think if you bought a set of 1.12's and 1.18's, then had a set of 1.16's and 1.2's made you'd be golden. And if you keep the torsion bar sockets lubed up changing the bars isn't really any harder than changing coilover springs. Sway bars selection wouldn't be any better with the coilover set ups, might even be worse. The way to do it would be to make up a splined sway bar set up, and that would be true regardless of the suspension package.

It's not to say there aren't any reasons to use coilovers, but there aren't as many as there used to be. The torsion bar suspensions have a lot more aftermarket support than they used to, and a couple of glaring holes in the aftermarket have been filled in just the last few years. Getting the parts to set up my Duster was remarkably easier than getting the parts for my Challenger when I set it up almost 10 years back. Not a whole lot of options then.