look bro, if you want to get faster you need a good speed program which im sure you have. If not find one.
Second, I've ran anavar, and my advice to you is dont. It kills you endurance and adds no speed.
Third, I've ran test testosterone propionate. Get a anti est to keep the water down and the pumps.
Fourth, I've ran trenbolone Ace.. by far the craziest speed enhancer there is, kills some people endurace.
Fifth, Equipoise - boldenone undecylenate - helps with wind and can help with speed as it did me.
I ran a 4.47 not on juice before I started at 180. Right now i'm 195-200 and can ran a 4.41 at the end of summer when I was clean again after a summer of training. You may want to run trenbolone ace and test testosterone propionate. gh - growth hormone (somatropin) - is too expensive but if you have the dough, all the pros are on that shit now.The dectection time on trenbolone ace is like 4 months so give yourself time to get off as I ran it last winter and cycled off all summer to clear testing. Test will make you slower as it adds a lot of water weight but you will get jacked, that trenbolone combo will do you good. Overall its up to you, test yourself out.