Where would the top fighters from the year 1987 have ranked in today`s P4P list?

This is a list of some of the top fighters from the year 1987, if these fighters were the same age now as they were in 87 where would they be ranked in today`s P4P rankings?

1. Mike Tyson
2. Michael Spinks
3. Evander Holyfield
4. Julio Cesar Chavez
5. Thomas Hearns
6. Mike McCallum
7. Azumah Nelson
8. Jung Koo Chang
9. Miguel Lora
10. Jeff Fenech