You will need Faeriegurl's bottom mesh for her muscular guy from
here for these to work.
Here are 8 pairs of overalls, based on Faeriegurl's bottom mesh for her muscular guy that are suitable for use with Marvine's slimmer bodybuilder top mesh. They are found in everyday/casual bottoms, but are a full body outfit which can be combined with any skintight top for the slimmer bodybuilder.
They are organised into 2 sets with 4 outfits in each set.
Set 1.
Set 2.
Credit goes to Faeriegurl for the mesh and Beosboxboy and wirelessguy for the textures/alphas.