Electric bus retrofit design and render

The project is to showcase a retrofit electric powertrain system attached to a bus body and chassis. We do not have CAD for the chassis and bus body, we would like this designed or if easier taken from elsewhere (See attached pictures, we would like the design to be as close to these pictures as possible). We will be providing our product (the retrofit electric powertrain). The render will capture the bus body and chassis as well as our product attached to the back of the bus. Please feel free to get in touch to ask questions, give a quote etc. Thanks!