..i just put that same kit in my A50..along with 6 gram rollers..kit comes with 9 gr...
..the torque driver did not fit on the shaft, and i had to open it up on a lathe...it had not been machined...
..i had two awesome days after that, then i ran upon a power problem with my A50, that i haven't figured out yet...
..but yes, if you get a good kit..that's been machined properly..and the correct wt rollers..(all these parts are lighter in wt than OEM)...you'll LOVE IT!!!!!