metal trucks

Hey all, an intermediate ho scale modeller here. I purchased 6 pair of the Ulrich, fully sprung, all metal trucks (sideframes, bolsters, wheel sets). Had to do some filing to allow the bolster to freely move, and then fully assemble the trucks. Once mounted to the freight cars, i learned that...

Hi, Could someone please tell me what die-cast truck/coupler sets come on Lionel's modern 17000 and 27000 series Standard-O Die-cast, 2-bay, offset hoppers? They don't look like the older 6-14078 Standard-O "Bettendorf" trucks with the pull-down tabs, nor do they look like the more modern...