Is this true, the piston/sleeve from a black magic works on a Mamba??

How about a Mamba X1??

If so, does anyone know where I can get a Mamba block for cheap??

Mine is warped and I need a new one. My piston/sleeve had to be removed the hard way so hence I am without a mamba. I tried the upgrade kit to put it back together, but, the sleeve would not fit into the block.