With sarms, you don't need a test base necessarily, but you might want something that creates estrogen. Running sarms only will eventually shut down test and estrogen. The sarms can fill some of the test roles but not the estrogen roles. I've actually seen some stuff on ppl running sarms with exogenous estrogen and having very successful cycles. I'm not a science guy so I can't get too deep but look into it. Adding some test or trest or really anything that converts to estrogen will help. But something like epiandro will not. Clomid definitely will not. Dermacrine applied to the abdomen is supposed to have a higher estrogen conversion. 4 andro will have estrogen conversion ect.