Question about front bumpers.

[thebat]

the bumpers do not mount to the cab they bolt onto the very frotn cross member of the chassis so no you would nto get a new one if buying a custom made cab there are though various different options of aftermarket bumpers out there

[bigdogrod]

here's tamiya's instruction manual page, scroll down for the rigs, look at the king hauler manual, that will show you how they are built

http://www.tamiya.com/english/rc/manuals.htm

[mcl fabrication]

I have a video of me building my day-cab King Hauler with a MFC unit, I call him the Green Giant. Here's the link, it may answer some of your build questions.

https://youtu.be/DCGSZih7wAc