74 power wagon dream truck...

At least you’ll be able to stop with some nice disc brakes mmmhhhhmmm
Not sure what I'm dealing with... Was told this was 1978 Chevy truck...
I want new manual looking hubs and from my research it looks like I have 73-77??...
What I have..
IMG_20210327_213424.jpg
And this is what I see on line..
Screenshot_20210327-214143.png Screenshot_20210327-214101.png
???..