well, as i have said, no one can here will give you a source for illegal substances. you can always drop a bit more by tweaking your diet, upping your cardio, changing the times during the day that you do your cardio etc. but if you consider yourself to be at your natural lower limit for bodyfat, do a search on this site for 'lipoflame' i have not used it myself, but it would be the kind of thing you are looking for, and you can read many good reviews of the product on this site. this site has many board sponsors who do top notch products, and they all have profiles on this site and are around regularly if you want to ask them anything about any of your products.