Much more cost effective to say "Hey Skilled (if they still manufacture the Scanias for MFS) can you build 3 more scanias, same set up as the MFS ones, just paint them white!"
Then we already have the maintenance facilities here, and a tried and true truck build. $100,000 for an operational pumper? One that is already 10 years old having done around 3000 jobs a year(or so the stories go). Yep, money very well spent...