well my friends bars have a little less thank 1k but it's on his 83 pu and they feel worn out already... and idk how much difference in thickness do the 83's and 84's are, or if they are they same in thickness...but hell, if his are like 22mm and these are 25mm then i might get these...any idea how these handle a right turn on the fwy going 60? cuz it's says 35mph max, but it's a fwy... it's a bit tight so it's limited to 35 but some people who have ok handling take it at 5o mph max, but some good torsions might be able to take it at 70!... so yeah let me know how well they handle over stock who have 200K on them.. lolz...
bump because I have a set of these, and its one of the best things I have ever done to my suspension.
Sway away says that they are 30% stiffer than stock. I'm not sure how to answer your question, it seems that it would be dependant on a few more factors than just the torsions. I will tell you though that with these, the energy suspension bushing kits, and my low profile tire it did handle quite well.