Chris, the most common shovels for loading coal hoppers was CAT 950, 966 and 980s, probably C and D variants for early 90s, F's and G's and upto the current H & K series now. The only one of these available in 87th is a Norscot Cat 966G, introduced mid-late 90s so would fit in with the FHH 66 etc, but to be honest unless you work with plant ( I'm a fitter for Finning UK) and dont mind then you'd probably get away with it. One question though, how does the Volvo scale with the hoppers? I have a Siku Liebherr 580 which sits OK with them
Jason