wanted to get tubular uca and front disc brake conversion

The pirate jack kit is just a 73+ Mopar disk set up that has been drilled for 5x4". It will work with the QA1 UCA's, but the odds of your 14" drum wheels fitting over the center register on those rotors is slim and next to none.
my 14" rims are cragar ss and have new tires which is why i don't want to change the wheel