No we do remove the bq Hotend and the RAMPS board form the Prusa i3 kit in order to make room for the Diamond Hotend and the RUMBA board in the package.
There are also some Kickstarter rules about having 3erd party products as rewards that require us to make changes to the product.
The diamond hotend weighs 250g
To see the dimensions you can download the 3D model of the Diamond Hotend here:
The file named: diamond_hotend_assembly.scad is a complete 3D scad model.
The file named: diamond_cooler_metal_parts_only.stl is a 3D stl model of the metal parts.
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