You, sir, are a filthy liar.
Let me check what I've got. It's been awhile since I did it (and my memory sucks) but there was a definite reason why 2x2 wouldn't work for me. I had them cut and everything and ended up tossing them to use different stock.
EDITED:
Now I know why. I air-hammered out my bushing mount so the box tubing would have a more solid surface to rest on. That made the bolt lay flush with the box tubing and interfered with the shock stud. So I used 2x3 box steel to make up the difference and provide enough clearance for the bolt. That also reclaimed the lost height due to removing the bushing mount so it all worked out in the end.
So forget what I said about the two shocks having different stud lengths. It all boils down to whether or not you choose to remove the bushing mount. I just didn't like how the relocation bracket rested on it, so out it came. (I told you my memory sucks.)