wat do i need to buy

one day i was drivin my 1983 mustang gt turbo and a gust of wind came up it literally pushed me into the dich at first i thought it was the suspension so i asked the original owner if he ever replacesd the suspension and he did right before i boght it then i started askin arond and i heard it was my sway bars and other suspension components wat all should i cange so i dont have this problem again

thanx 4 the help