during the beginning of his career Lennox Lewis was weighing in between 224-236lbs. He's a natural heavy, later in his career he probably could of gotten as low as 235lbs. http://www.boxrec.com/list_bouts.php?human_id=1853&cat=boxer
Lennox would have to amputate a limb to make cruiser. He's not a small heavyweight that can get away with that, he's a big heavyweight who benefits from the natural strength he possesses at his natural weight. We'd never know of him as we do today because he would have never fought any of the big names in the sport, who were at heavy and not cruiser. He would have been a ridiculously oversized cruiser dominating a division that never got the attention it so deserved. Everyone would attribute his overwhelming size advantage as the reason(he had quite the size advantage at heavy versus a majority of his opposition...at cruiser he'd look like Valuev compared to everyone) The only fighters who drop to cruiser are the ones who found the size of modern heavies too much to cope with(and their skill/experience isn't enough to offset that)
Lennox was always a true heavy and as the years went by he put on meat and then fat when he approached 250
No way. Lewis was almost too lean as it was back then and was only ever going to grow into his frame. He was a bonafide heavyweight.