It would be much safer to use test as your base and then add tren to it. Not only is tren very toxic, it can also do a real number on your libido. 400mg tren is a strong dose. If you are new to tren e, you might want to try less for your first run, 300mg EW would produce some great results. If you are used to running test at 750mg EW, then sure, 750 test. The internet is a great place. Lots of good info out there, but there are some crazy ideas too. All this talk of insane tren doses with minimal test is just dumb.