I've had good and bad results, I transfered the muscular 1, 2, 3 to the Bam3 clothing they transfered very well on the pants and on the tank top but didn't work real well on the sweater the chest part didn't morph. This is a render of the muscular 2 morph, as you can see there are very small poke thrus on the shirt but a tiny bit of scaling will fix it. The pants mesh starts to break on the muscular 3 morph, but I doubt you would want that kinda (superhero, warrior) morph with those pants lol