1975 SquareBody with front drum brakes?

[NeoJuice]

Looking at a project truck. It’s a 1975 with a sbc 350. It’s a nice little project truck for a decent price but it has front drum brakes. Didn’t Chevy make front disc brakes standard in 71? I asked my brother who knows a lot about old classic cars and he’s perplexed as well.

If I was to get the truck I would plan on lowering it so I would need a disc conversion kit. Drop spindles and springs up front. Then the disc conversion kit or do you think I could piece it all together from Napa? It has a booster and master cylinder so it has power assist. In the pictures from the seller I can’t see if it has a prop valve. The truck is about 3hrs away from me and would need to be trailered home.

Any input would be appreciated. This is my first post in the 73-87 forum. I was a regular poster in the 47-52 forum before selling my 52 last summer.