All the more reason not to add more stress to it. Race cars are designed differently than jeeps, than pickup trucks, than street sedans. If you want to make something something that it was not designed to do, you have to do the homework.
That's exactly what Bill at RMS and Denny at HDS have done. They are A-body owners and have disassembled , modified and altered more of these cars than most people on this site. They have taken what they have learned from multiple try's and fails to come up with the systems they sell. These suspension systems are not just some afterthought , they are extremely well engineered and built and far exceed the build quality of the factory pieces. One of the biggest achievements is the weight reduction and, therefore the resultant reduction of weight bearing stress on the factory frame rails and sheet metal. Go ahead , google to your hearts content and try to find one instance of failure of the thousands of Bill's and Denny's suspensions, you wont find one. I know , I tried, All I found was overwhelming praise for how well they worked and how well they were built. Not to mention how well they support their products. There is nothing wrong with the engineering behind the torsion bar systems Ma Mopar blessed us with, there are major issues with these assemblies after they have been used for 50 years. Power steering mounts, LCA pivot mounts , torsion bar mounts etc.. are well documented failure points and can be extremely dangerous if the failure occurs while driving. I don't care what A- body you take apart or how much mileage it has on it, as soon as you check out the suspension components you are going to find very shoddy construction and multiple locations that need re-welding to be acceptable as these pieces were never meant to last this long or perform with the tire/wheel combos we have today.
This is what I think hotrodding is about, improving on what the factory offered and it hasn't changed since the first model T was modified. Basically what you said, do the homework , discover what works and what doesn't and then find a way to safely adapt it to your ride.