Anyone help me build this from scratch

[school]

It's a thomas EF school bus.The year is a 1998.
The wieght i would like it to be 12 tons
Cummins 5.9

I would like to have this bus made because,we don't really have a lot of type (D) school buses.
This type hasn't been made before.
I searched it and has not been requested before. This is the first request for a thomas EF bus.
http://www.schoolbusland.com/thomas/35351.htm
Including:
Fast opening doors
Fast moving stop sign
Fast moving cross arm
Thomas EF sounds.

[school]

Dlete thread please thanks