'16 cascadia sleeper a few questions about adding some things to the truck

New member here, driving about 5 years and purchasing my first truck. I don't want to go all out and get an apu so I am putting together my own type of apu that will be primarily electric but backed up by a small generator. but before I get into it, I need some extra battery storage and a place to mount a 2000w inverter generator like a small Honda, for now the generator lives strapped to the catwalk just forward enough to not get ate up by the trailer nose and a 2 gallon gas can is set in the upper step for the catwalk and strapped down. I'm not sure how to go about getting a box or even how to get that mounted to the frame as I am having trouble finding something to simply buy and have shipped to me.

I have had only one good suggestion so far to get a m2 class trucks battery box and use that to hold the generator but that still leaves it exposed to the elements and getting that mounted presents another obstacle as there are no holes in that empty part of my frame.. as far as battery storage goes I would like to find a battery box that would mount under the catwalk like I saw on the day cab Columbia trucks I have driven ('10 year model) then put some deep cycle dedicated batteries in there instead of needing to change out the current battery setup.

TL;DR Need to find a frame mount battery box like the Columbia day cabs had, don't know how to mount those, need a box for a small generator to mount on RH side of truck, there are no holes there to mount from.

In the end i would like to have this setup be able to follow me to the newer cascadia should things work out that way, or, if this truck can go another 500k miles just keep running this one till it needs too much work.

 

I've just about got a battery setup in mind with all that factored in. I'm not so strongly suited on the actual hardware side of the install. I know you're not supposed to drill through the frame for mounting but I've not found the right equipment to do what I need

 

It may be a toy by generator standards but I didn't really wanna take my 8kw gen with me lol it'll handle whatever I throw at it so far. I need to find a semi truck junk yard but My ol lady is gonna kill me when I do. Already spend too much at pull a part when I go there . I will bookmark Merritt for later. Seems like they would be able to build whatever I need but may be costly.

 

Where did you find that at?

 

Probably what I end up doing, maybe w/o the ac part of it just run it with a larger alternator to keep up with the house loads. but, I want to keep it mostly electric, using the generator to charge if I need heavy ac usage and just charge from the alternator during my driving. battery tech is changing and other chemistry batteries are getting cheaper per kWh of storage so I may have a good route there.