i am going to make a ss hose that goes from the master cylinder directly to the slave to bypass all that mumbo jumbo distobution block/hardline and need to know if i should use AN-3 or AN-4 hose

i figure i can use a fitting like this at the slave




i was origially going to buy one of the premade ones in that group deal but i want to elimate that hard line thing so ill just have to make one