whats up with power brakes

the person that i got the car from last week put disc brakes on the front. it has power brakes. when you put foot on brake, it stops even and ok, but with No sign of "power" brakes. feels like you had the motor die and you have a hard pedal. i can find a bad vaccume but the vac line that goen intot he intake (elde intake 4bl) is very small diameter. like a match stick size. would this pull enough vacc to make the booster work. of do i have a bad booster? should the vacc line be hooked into rear plate of carb, or a place on the intake. I dont see anything larger on the rear of the intake for the booster line. the car also has two boster lines that run together at the booster and again just before the intake nipple. is that right? any help appreciated. tks :-D