OK, gotta think about it, as someone mentioned the smaller T-bars are better if you drag race,
and want the car to rock backwards, when you take off, to help weight transfer.
Is there a simple mod for ditching the T-bars and going to coil overs?? Is it worth it??
There is no "simple" way to go to coilovers that doesn't involve writing a check for several thousand dollars to RMS, HemiDenny, Magnumforce, etc. At least not safely.
As for it being worth it, I suppose it depends. If you're installing a Gen III hemi and just absolutely need the room for headers or a different oil pan, maybe. If you absolutely need to have rack and pinion steering, well, it's the only way to do that with anything that resembles half decent geometry. But other than that, all you're doing is grafting a 1970's design Mustang II suspension onto a Mopar chassis that was designed to carry it's suspension loads in completely different places (crossmembers, not the shock towers). There is nothing magical about coilovers. They are a spring and a shock, nothing more, nothing less. A torsion bar is just a spring.
Why ditch the torsion bars? The brand new revived Ford GT supercar uses a torsion bar front suspension, so no point trying to argue it's an outdated design. The Hotchkis Taxi, driven by TireRack's test driver on a tire testing course, put down lap times that were a second faster than the 2012 3-series BMW that test driver usually drives on that track, with the same tires. 1 second per lap faster than a 2012 BMW 3 series. Remember, the Hotchkis Taxi is a
4 door 1970 Satellite.
So, if you want coilovers, knock yourself out. But you don't need them. It used to be that you had more tuning ability with coilovers, but the options for shocks and torsion bars are improving every day. If you know how to tune a torsion bar suspension, you can pretty much do what you need to do. Yeah, most of my examples are road course or autoX. But if you can tune the torsion bar suspension to do that you can sure as heck set it up to drag race.
