I bought this, to replace the standard bridge on a Squier Stratocaster. All of the mounting holes lined up, so it bolted straight on. I already had a heavy duty brass sustain block fitted to my bridge, and it transferred over to this bridge perfectly, without any modifications. Intonation and saddle height adjustments took about 5 minutes, and the guitar was ready to play.
There is a very noticeable improvement in sound. Every note seems to ring out with greater clarity, and the notes are punchy and well rounded.
This is an enormous improvement over the original Fender bridge.