You will need the
MESH_ju-beos_slimtop050802.package mesh for these outfits to show up in your game.
Here are 8 double shirt tops for Marvine's slimmer bodybuilder mesh.
They are organised into 2 sets with 4 tops in each set.
Set 1.
Set 2.
Credit goes to Marvine and Beosboxboy for the mesh and muscle shadowing and wirelessguy for the textures/alphas.