what diameter brake line do i need for my car? its a 1987 MCSS

 

now i am not 100% sure as it's been a year i changed mine but i thing it's 1/4 inch for the front and 3/8 for the back and the 1/4 again from the T on the rear end
but like i said i could be wrong but it would be close to that

 

thanks man, from looking at it, that seems right