Brake Booster

Ok, motor is good to go. But I've discovered I very little for brakes.

I can stand on the peddle (with all my weight) and I can just bring the little box to a rolling stop.

I really don't remember how the brakes were before the head job, total driving experience was loading it on the car dolly, so I never got a feel for things.

I'm thinking brake booster, I have tons of peddle, it just doesn't seem that there is any brake assist.

I didn't any reference to brake boosters on the site, so I'm looking for some sage advice

(this is on an 89RS. pad and calipers appear to be in good order.)

Thanks in advance