well...technically any aas can be used for dieting, the usual drugs are those that are androgenic and won't make you hold much water. Test, fina, winny, masteron etc...are often used for dieting. A typical stack (depending on your stats and cycle experience) would look something like this.
Test (any ester) 300-500mg 8-10 weeks
winny (oral or inject) 50mg/day usually last 4-6 weeks of cycle
Fina 50-75mg ED or 100-75mg eod. usually last 4-6 weeks of cycle.
this is VERY general. Test will make most hold water, but, it's usually run as a base. Some don't though.