You guys should try selling at classic car auctions. Im not talking Barrett Jackson, theres lots of other open to the public sales where cars do good money. I watched a 65 barracuda do 22000 last year, all depends who wants it.
I put the front on my 67 cuda with 340 torsion bars and loved it, than I added the rear and it made a good diffrence on the country roads. Im glad I did it. I had to make my sway bar tabs for my control arms, it wasnt that hard.
Mine was doing the same but I found a frayed end down where the bend is before going in the tranny, rock auto had new for 15 bucks installed and no problems now.