>>1891992honestly pick anything out of amiami's bishojo figures (not even the R-18 category) and it has a good chance of being pretty lewd; thats the state of the industry and fanbase these days. almost 100% of the time the manufacturer preview pics will show if a particular figure has removable clothing.
that being said there is also a small community of folks who modify figures to uh, suit prurient interests. this is called makaizou and you're gonna have to look through sites like yahoo! japan auctions to find em.