What difference does it make about the need? If the brakes are there and available, use them. The A body stuff is gettin harder and harder to find every day. Since the F, M and J brakes interchange easily and work well, use um.
if someone is removing perfectly good, working brakes just because they got a bigger set, and they don't know what the trade off's are, that's not cool.
we didn't use to have this internet thing. (thanks Al). the only way we learned was bench racing, magazines and doing it ourselves. when you've wrenched cars for a long time, you think about the time and money you and your buddies spent trying to go faster, handle better or brake shorter, and realize how much of it was done with minimal understanding of why something works, or didn't :( . it can be sad watching people, (and i don't have any idea of Stacked360's situation), that don't have a lot of money, spend it on things that may not end up doing all they want. if a guy want's bigger brakes, have at it, but maybe he'd like to go in knowing if it's worth it.