When it came time to replace my rear heims, I bought QA1's and I'm very happy with them I would highly suggest spending the extra and buy the double adjustment. Just like with the heims on our 360 winged sprint car, heims don't last long being metal on metal. The either get ovaled out & loose, or will bind. If you replace yours, let me know and I'll send you the link for the best heims on the market and have zirks with a different grease that won't get hot and leak. Don't buy Speedways, their cheap crap !
I also used electronic scales on each corner. Man, was I amazed just how off,.....each corner was ! Now, all four corners are about equal and the front to back is 51%-49%. It drives and handles so,.... much better.
My point, if you're going to replace the shocks, you might as well go through the steps I did, you'll be much happier. Here's a pic of the strut, and if you want to borrow mine, shoot me a email or call.
Kevin
402-781-2322 (Nebraska. Anytime, central time)