I have dropped a big block in a slant six car before and drove it with the original slant six drum brakes and T-bars and all.
Some people make too much of it, sometimes you just gotta run what you brung. I never had a problem with it. Regardless what engine or suspension is in the car, you will do yourself a favor and go out to an empty parking lot and get to know your car. When you truly know how it will react and handle, then you can drive it the way it wants and will work the best for you and your car and then you can make adjustments as you go.
Too many people use bigger brakes and so called upgrades to compensate for lack of driving skill. Just know your car inside out and backwards and don't try to drive it like a Ferrari that its not and you will be fine. I have driven slant six drums in Denver traffic and I found that when you pay attention, you wont run into anything.
