Aouita must bang his head against the wall every day at the knowledge he just missed the EPO era. But say his peak had been 5 or 10 years later and he could have enjoyed El G levels of EPO, how much faster would he have ran?
12:58 was incredible at the time, but it took him a bit of effort to finally break Moorcroft's record and become the first man under 13 minutes, and he only shaved two further seconds of his own record. As we know, as soon as EPO became available, the record came down in ridiculous fashion and even Moroccan runners who were faster than Aouita couldn't get into the national team. Likewise his 3:29. Coe, Ovett, and Cram should already have ran 3:27, and Morcelli and El G soon made these times look routine.
Personally I'm not so sure if he would be so much faster with EPO. Obviously, he was blood doping to the max already so I'm not sure EPO would have made much difference except be easier and less risky for him. However, he'd have the problem that instead of being the only Moroccan drug cheat in town, he'd be swamped by dozens of others. We might never have even heard of him.