I cranked up the original ones on the 89 4Runner I used to wheel with, had 33" boggers in there and a toyota V6. Never had a problem with them. Never lost any height. in fact, when I scrapped that truck, I kept the original torsion bars (don't ask me why but I did) If you want them to compare or even try out, you can have them.
let me know.....
Cheers,
Bruce
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Liquor and Whores, Liquor and Whores, Cigrettes and dope and mustard and baloney, and liquor and whores...