Flow numbers for Magnum Heads

Does anybody know what Magnum heads flow in stock form? Are the numbers different between the 92-01 and 01+ heads? Are the heads different?

Edelbrock has RPM Magnum heads available. Her are the numbers

Flow Data
Edelbrock Magnum (PN 61771)
Lift In (cfm) Exh (cfm)
.100" 62 52
.200" 119 105
.300" 175 142
.400" 225 169
.500" 251 185
.600" 260 190

-Alex