I have a Hyster forklift, serial # B3D10411S, with a Continental engine model G193, mast # 137478 128.5 12-71. I am trying to find out a year/model #. It has a Kenhar fork attachment with 2 forks 60" x 5" x 1.5" with pin and ****, has # K2122U and KE93503 on it, and the back of the fork is 21". I'm trying to get information to get a missing capacity plate made. On the side is the remains of an old sticker that possibly says Challenger 50? It is a gas engine with pneumatic tires. Anybody out there who could help me?