The GHQ Bucyrus Crane kit is great ! If you take your time and study the parts the options are endless just think out of the box. When building the boom you may have to file the center support down a bit, Fold two sides of the boom and test fit the center support, Then glue the support from the inside. once the boom is fold I find it neater to glue from the inside out, I use and very thin wire and take Baby Steps when I glue it. When I glue the boom to the cab I glue it with the glued seem facing down for a cleaner look. If you want to Trick It Out you can use either a #79 or 80 drill bit and drill the holes in the pulley and one in the cab body to Rig It like the real thing. In closing for me this is a must have you can build it in a thousand ways, Remember it's a hobby having fun is what it's all about.