You will need the bodybuilder overalls mesh from
here for these to show up in your game.
Here are another 8 raver outfits for the bodybuilder, this time with a t-shirt instead of a tank top.
They are organised into 2 sets with 4 outfits in each set.
Set 1.
Set 2.
Credits:
Mesh - Marvine and Beosboxboy