If you could make anymatchup from any era what would it be?

[ICB]

I'll do one for each weight class that way its easier.

Heavyweight = Lennox Lewis vs Riddick Bowe
Cruiserweight = Evander Holyfield vs Rocky Marciano
Light Heavvyweight = Matthew Saad Muhammad vs Bob Foster
Super Middleweight = Michael Nunn vs Roy Jones Jr
Middleweight = Carlos Monzon vs Marvin Hagler
Jr Middleweight = Terry Norris vs Mike McCallum
Welterweight = Thomas Hearns vs Sugar Ray Robinson
Jr Welterweight = Aaron Pryor vs Henry Armstrong
Lightweight = Floyd Mayweather Jr vs Pernell Whitaker
Super Featherweight = Alexis Arguello vs Azumah Nelson
Featherweight = Salvador Sanchez vs Erik Morales
Super Bantamweight = Wilfredo Gomez vs Marco Antonio Barrera
Bantamweight = Ruben Olivares vs Carlos Zarate
Super Flyweight = Khaosai Galaxy vs Johnny Tapia
Flyweight = Miguel Canto vs Jimmy Wilde
Jr Flyweight = Ricardo Lopez vs Michael Carbajal
Minimumweight = Rosendo Alvarez vs Ivan Caleron