No sir, all true and I have the evidence. You're the one swearing and stomping your feet, perhaps you'd like to back up your claims? Here's the evidence for everything I said-
Look at the Hotchkis Taxi. They did a tire comparison on the TireRack track, using the TireRack test driver. He put down faster lap times with that 4-door B body than he puts down with a 3-series BMW that he drives for a living testing tires. Same track, same driver, same tires, 4 door B-body vs modern 3 series BMW, with a driver that has way more hours in that BMW and has by his own admission not driven older pro-touring style cars. I think that says a lot about what these cars can do with their torsion bars.
Here's the video, it's little long. You can pretty much just start at the 3minute mark. At 4:30 you can watch the Hotchkis Taxi kicking butt. And at 6:00 min TireRack's professional driver goes into how the Hotckis Taxi is a full second a lap faster than the BMW 3 series, even though Woody (tirerack's driver) had never driven a "protouring set up car" before the test and has probably turned thousands of laps with that 3 series.
Here's a fully RMS suspended Duster losing in every category to the same Hotchkis Taxi. That's right, a fully RMS suspended Duster getting beat around the track by a torsion bar suspended, 4 door B-body. Physics alone should give it to the Duster just on weight and size, but that's not what happened.
Again, for the OP, please do whatever you like. The HDK, RMS, and even QA1 systems are good ones. I don't know your build plans or how you plan on using the car, so really I can't say one way or another what's "best" for you. Coil over replacement systems have their advantages, but they also have their disadvantages compared to a modified torsion bar set up. You can usually save some money with a completely modified torsion bar suspension compared to any of the full coil over conversions, but it does depend on your plans. My point is just that if you want a great handling Mopar, you don't NEED a coil over conversion. If you just need to have a rack and pinion, well, that's the way to do it. All I'm trying to do is put all the information out there.