Took the car to get inspected and the rear lines are so rusted there about to blow out. Anyone know what size the hard line is on a 94 GSR? Also dbl or or single flare?

 

almost every small car are 3/16 and moslty double flare...there are several types .....standard american 3/16, double flare, 1/4, 5/16 all american...what you want is japanese metric double flare....still 3/16 line but with a metric fitting and double flare..careful ther are other metric out there as well...ther are english which is metric but with a bubble flare...and european metric double flare but with different fitting