Finally making a little bit of progress.  The cab will be lowered, shifted forward and lengthened almost 3”, so I needed a new floor.  After a lot of trial and error, I ended up using 1/8” ABS.
I’ll need four more seats, so I may try casting them using fast cast resin.
A coat of white paint for the pink shocks.
Finished up the hinges for the tilt cab.  
I’ll eventually attach the cab to the floor with a few screws, so the entire assembly will tilt.