Three pieces of info to pass along as Dave has seen the thread and mentioned it to me.
First, this photo etch kit was specifically designed for the Trumpeter kit, so you may find minor variations in fit, depending on what tank you have but it should fit any accurate T-34. Second, the PE will be easier to work with if annealed, and third, even though they are called "bedspring", this was actually a kit mass produced for and issued to the Red Army in WWII. That was a little piece of history that was new to me, so thanks for that, Dave.