I have done a few module conversions on my website from AD&D (and Warhammer Quest) into Fantasy Hero. They are kind of rough but playable quick converts. I have done the following:
N1: Against the Cult of the Reptile God
N2: The Forest Oracle
N4: Treasure Hunt
U1: The Sinister Secret of Saltmarsh
U2: Danger at Dunwater
U3: The Final Enemy
G1: Steading of the Hill Giant Chief
G2: Glacial Rift of the Frost Giant Jarl
B2: Keep on the Borderland
I3: Pharaoh
A1: Slave Pits of the Undercity
I have work started on A2, I4, and G3, to continue and finish those series, but are there any other modules people would really like to see? Hint: I don't care to rebuild any of the S series.