I do not think Jackson ever made a foam bulk head for the Star series, they all come with the happy feet, I could be wrong. Unless you mean the front foam pillar? I would just get a block of foam an start carving
pull one out of a friends boat or borrow one from a shop and trace the design on a new peice of foam and cut with a sheet rock saw. that's what i did for my wife a few months back. worked great cost me 10 bucks.