Torsion bars for better handling; your experience?

1.03 bars or bigger. Matched mine to ESPO 6 leaf hd springs. A must, is Bilsteins or better shocks to control the firmer spring rate.
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I completely agree with this. At the bare minimum go with the 1.03" bars and even those might bit a little too soft. With good shocks (Bilstein or the Hotchkiss/Fox shocks) the 1.06" bars or the next one up from Firm Feel would be pretty good too.

I went with 1.03" bars from PST in my build and I like them, but I do think they're a little soft but a good compromise in handling and ride. The reason why I went with PST is because it fit my budget. I'm also using Bilstein shocks and they ride quite well.

I think I felt the biggest difference in handling with an improved front sway bar. I went with a Hellwig tubular 1 1/8" sway bar up front and it flattened out the car tremendously in the turns. Try that first since they are quite affordable, especially if you get it from Summit Racing.

I just finished a PST suspension upgrade with Tubular UCAs, Boxed and rebuilt LCAs, 1.03 torsion bars, front and rear sway bars and Bilstien Shocks. It already had subframe connectors. It went from being scary in the corners at speed to confidence inspiring and solid however I drive it. I haven't upgraded my tires or my rear super stock springs yet, but I am very happy so far!

Cley

@89on35s which PST tubuar upper control arms did you go with?

For the OP, I would also recommend boxing the lower control arms, and pretty much rebuilding the whole front suspension as well. It will make a difference, especially if you haven't ever rebuilt it.

For my build, I'm about to weld up and box in a spare K frame and install that along with a Borgeson steering box in the upcoming 4th of July weekend. Making it an extra long weekend since I'm taking Monday off.

I also need to install sub frame connectors but I just don't have a place to do that.