I will be looking for alternate PS wire routing than that shown on page 146 of the assembly manual. The manual shows routing outside the 1.5” firewall support. I just ripped mine to shreds test fitting the cab. I am working by myself using a lift to drop/lift the cab. Maybe, if you have multiple helpers pulling the sides out you could make it work, but that is not always convenient.
The brake lines, also mounted there, are strong enough to withstand the abuse, but not wiring.
Just my experience.
Ralph