takeuchi 135 upgrades or modifications?

I have an 02 takeuchi tb 135 and the main lifting cylinder started leaking. I was wondering if there were any options out there to replace it with a bigger one that can lift more? am I limited by the pump or the mounts? or will the boom just not handle it? I need to lift a few concrete blocks that are 3000 lb. the farther out I can reach the better.
thanks for the help