Doing it for 30yrs doesn't necessarily it was done right, now before you get your back up let me try and explain it another way.
Stock brakes are designed to have a balance of 70/30 front to back, you throw a set of Toyota 4 pot calipers up front and because of the larger displacement now you have a balance of 85/15, you take the car for a drive and slam on the brakes, the front of the car pitches down a lot more than it did before with the stock brakes and feels like the car is stopping faster, but it isn't, it's actually taking you longer to stop because the rear brakes aren't doing the right amount of work and the front brakes are overloaded.
I've had 3 different configurations of "upgraded" brakes, rear discs, larger MC, larger booster, adjustable proportioning valve on my Z and I still can't lock up all 4 wheels at the same time. It took me a long time and a lot of money to realize that it is called a braking system for a reason. Each braking system is designed specifically for that car if you change any major component on a braking system you will throw the systems balance off.