71 C10 Brake Master Cylinder / Booster Questions

[DD1]

Hello, I purchased a used power brake booster and master cylinder for my 71 C10. Thanks in advance for your help.

The Master Cylinder was really nasty, so I ordered a rebuilt MC from Autozone.

I ordered part M1494 which looks the same as the old MC, and I think they sent me part NM1494 (in the M1494 box) which has a smaller rear chamber. Does it make a difference if I use the one with the smaller rear chamber?

On the left is what I received, and on the right is what I ordered. Then is the new one on the left and the old on the right.

Everything fits on the new one. Should I just keep it or return it and get the exact same type of MC?



Regarding the Brake Booster, I don't have the hardware to connect it to the pushrod. Anyone know where I can get the piece that goes in the middle and connects to the pushrod?