The following new Creatpshop kit in 1:50th scale is recently announced:
Together with the kit of the Caterpillar 375 LME Boom you now can convert a Joal Caterpillar 375 Hydraulic Excavator to a LME version. Its also suitable for the Caterpillar 5080 Hydraulic Excavator made by ERTL and Norscot. The Kit will be available Februari 2014.
In the shared pictures you can see the completely handmade prototype of the bucket that will be used for making the mold.