If you wanted to just start with a globe, and not do many body mods: this company has/had a howe grumman lti 100' ladder, with a kenworth coe tractor
http://www.longislandfiretrucks.com/...gory/company-2
Here's a guy running a 1/14 tiller ladder and some other aparatus.
https://youtu.be/LdGhp2hQDhw
On your LaFrance if you get a chance, could you measure cab width, or rub rail, or fender width?
This has some really nice detail pics of different ways to set up a tiller truck.
http://www.tractordrawnaerial.com/th...-drawn-aerial/
It breaks it into tractor, trailer, tiller sections