Hilton would take his head off with the left hook. Baek was strictly a WBA favorite son. He was basically a club fighter. He did get lucky in facing and beating a way past it Fully Obel. That's about his only decent win.
Baek was at 154 for quite some time. He lost to Sean Mannion in '84 for a vacant WBA 154 lb. title and was blown out by Julian Jackson at 154 lbs. in 1987. At 154, Hilton easily beats Baek. Hilton never really competed at 168 lbs and Baek skipped that division, so the logical matchup is at 154 lbs.
I meant Baek skipped 160 lbs, which Hilton fought at. Hilton didn't fight at 168 lbs. So, the logical matchup between the two is at 154 lbs, a division they both competed in for a large portion of their respective careers. I was off on one point, but the rest of my post was logically solid. With this correction, my argument is now logically sound and irrefutable. As to your question, they cannot be matchup up, theoretically, at 168 lbs., but can be at 154 lbs. I hope this clears it up for you.