Ffw, Shimano Calcutta 50 were some workhorse of a reel and still is if found in excellent condition can hold close to its retail value. Unfortunately by time i had the urge to tangle with some lighter stuff, they were all but discontinued so i ended up with the replacement Conquest BFS, still expensive but I figured it'd last me forever base on how much i get to take it out. As for the shallow spool for the Abu round reels, I don't think there are any but there are handful of Japanese Abu enthusiasts in Japan who will go the distance to get one custom made ( read: Expensive.) Check out Youtube video by a Vloger: Enjoy Fishing Channel! This angler regularly shown visiting various high-end "trout" specific custom tackle shop and all these high-end gears can be seen, like your Ambassadeur 1500c & 2500c in custom restored condition with many different colors. I consider the gent to be well heeled if you know what i mean and one of the world's best baitcasters at that.