Do those have internal struts?
Yes, 3/8" thick, dang thing weighs a ton ..
Is that your International?
Yeppers ...
It's a 54 titled as a 55 ....
Been in the mode of doing a makeover ...
Attachment 107234
... Built 4L85E ...
Replacing the THM400 that's in it now ..
Adding a few goodies to the Binder ...
Attachment 107235
Attachment 107236
Got a killer sound system going in it ..
12" Kicker woofer in a homemade ported sound box behind the seat with a 700 watt amp ..
Guaranteed to piss off the neighbors ...
... ///
https://youtu.be/UcJ6kqNN2uo \\\ ...
Attachment 107237
Detroit Locker .. Had a GM 12 Bolt rear end but did replace it with a 3/4 Ton 14 Bolt Corporation ..
Attachment 107233
You don't see many of those old trucks around... This is one I used to have, along with my early-stage shovel.
Attachment 107232
Cool old L-Series .. ^^ :clap for you: