You might find this useful:

http://www.hoagiesgifted.org/highly_profoundly.htm

Though I must say that I asked the psychologist who tested my DD with the SB5, our local gifted expert, whether she agreed with this chart that SB5 numbers and she did not seem to. She felt that SB5 and WISC4 numbers should be considered to be directly comparable. She described my DDs FSIQ of 146 on the SB5 as HG.