1940 Ford P/U Front Spring Shackle Bushing removal

[steve_texas]

Hello,

I am trying to install a pete and jakes front shock kit in my 40 p/u that requires replacement of the original shackle with one from the kit that includes a mount for the lower shock. It appears that I need to remove the shackle bushings from both the spring and wishbone to fit the new shackle hardware. Can someone please advise how to remove these bushings? Can it be done with the spring and and wishbone installed in the truck? Thanks!