Gary was a genetic freak - between all of the muscle he could pack on and his great conditioning. Based on recent pics I've seen, the guy appears to have lost nothing. Remember that he had great wheels, calves, abs, chest and shoulders. Weak points were slightly-below average arms (for his size) and a below-average back (for any size). Since he still had those weaknesses at the height of his career, chances are nothing's changed. But a big and diced Strydom should still crush guys like Branch and Dennis James (who are also relatively weak in the arms and back). Though not at Cutler or Coleman's level, I think he'd be good enough for 4th at the Olympia assuming he returns to form.
Special "I Got Mail!!! Yeahhhh!!" Ed