Been there, done that ...

all 4 mounting points are "high" on the block so to speak.

The 3 that I have used give a better spread of the weight across the bracket face and cause less tendency for the block to want to "bend" toward the bracket bottom, thus stressing the bracket face at the top attaching points. I found this mounting method to be the most balanced.

For Sale: 1997 Explorer XLT V8 AWD