You will need the overalls mesh for the bodybuilder from
here for these to show up in your game.
Here are another 16 raver outfits for the bodybuilder.
They are organised into 4 sets with 4 outfits in each set.
Set 1.
Set 2.
Set 3.
Set 4.
Credits:
Mesh - Marvine and Beosboxboy