what do i need to buy to put new brakes in?

If you want to replace everything and start from scratch, I would start from the ground up. If you want disc brakes you could get a kit like these:Mopar Chrysler Plymouth A body front disc brake conversion 5 on 4 bolt pattern | eBay

Complete Dodge Dart Mopar A Body Disc Brake Conversion Kit for 5x4.5 Wheels | eBay
Pay attention to the bolt pattern, I don’t know what yours is. There’s “small bolt pattern” (5 on 4”) and “big bolt pattern” (5 on 4.5”)
You can get a kit with or without a master cylinder.

And then choose a line kit. I like replacing my lines along with everything else because it gives me peace of mind:
1968-69 Dodge Dart Mopar A Body Complete Manual Disc Brake Line Kit Set OE Steel | eBay

I hope this helps. Of course, do some research to make sure the parts you’re getting match the goals you have. If you just want to cruise, keep it simple add a brake booster if that makes you feel better.

Great thank you, the rear brakes qere changed and rebuilt by the previous owner and he had the rear lines done by the shop so I only have to do the front ones. i wanted to double check on some stuff with you guys before i buy the wrong parts.

so i have to get two front brake hoses, both those gaskets for the master cylinder since i think it doesnt come with them, the master cylinder, and the steel front brake line set. i think i have disc brakes in the front cause that thing i took a pic of looks like a caliper to me but im not sure. this product says its for a bodies with front drum brakes though but it looks just like the rubber hose i took a pic of. i snapped a photo of both ends of the hose thats on there to make sure.

So i change out the front lines, the two rubber hoses, and the master cylinder and i should be all good? and i checked out the exhaust leak theres one before and after the muffler on the tailpipe side and one good size crack on the thing going out of the engine by the intake manifold? i was gonna use some of that high head exhaust leak stuff with a method i watched on a chrisfix video of putting a vacuum cleaner to the exhaust with the car off and cramming that putty in the cavity after wire brushing the hell out of it and with the engine cool. with that good to go all i would need is a tail light and a headlight and i think i would be street legal and safe.

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