brake issue on 2003 dodge 2500 2wd gas

What is your question?

Ok bought truck in September got a good deal so some quirks are expected. Had it about a month and went to Miami about 90 miles into trip (straight from keys not many lights or stop and go) front right wheel well starts smoking so I figure caliper is locking up (figure it would need brakes) So been driving and it pulls a little and shakes just replaced front brakes yesterday pads rotors and calipers. The others were not in bad shape considering I thought caliper was bad and rotors warped. So I bleed the system and take for test ride loose pedal and brakes. Come back lift hood and radiator overflow seems to be cracked water all over??? Anyway rebleed rebleed and rebleed sytem get pedal up and hard and take for a drive to floor again and no brakes. So I go buy a mastercylinder install and bleed bleed and bleed again pedal nice and hard take for ride again pedal goes to floor and no brakes. No fluid leaking or anything ABS light not on and never has been