Dimensions for School Project (Please delete if not appropriate)

[MjSeverance]

Hello!

I am doing a project for a science class where we were suppose to choose a real-life working machine and relate it to the working parts of a cell! Being a crazy bus enthusiast, I chose to make it on a bus! Does anyone have the following?

1. Exact interior and exterior dimensions for a 90 passenger Thomas HDX
or
2. Exact interior and exterior dimensions for a well known model of a 45' coach (preferably anything with the last decade and 1/2)

Thank you for whatever help you all can give me!
Fellow bus enthusiast,
MJ