Depends on what you have access to and how much synthetic chemistry you know. You can make it from 1-test by adding a methyl group with a Michael addition and quenching the enolate that results with bromine. Then, elimination of the Br can easily be accomplished by stirring with a relatively strong organic base like DBU or tetramethylguanidine. Presto, you have methenalone or 1-methyl-1-testosterone.
1-Test is extremely close in structure (methenalone minus a methyl group) and if one were to make the enanthate ester of 1-Test, I expect it would have very similar properties as primobolan depot and it is legal (in the US) to boot. Sigmund Roid did that and gained 7 lbs of water free mass in two weeks with 500 mg ew. He did, in fact, compare it to primo. He did note that it was quite a painful injection however.