Join Date: Jun 2009
Model: Mercury Sable Wagon
Engine: 3.0L 24v Duratec V6
Rep Power: 23
Ford does not recomend jacking or supporting the car from the subframe. I know many do it anyway. I am sure they have a reason.
I have gotten away from using jack stands and have acquiredd several10x10 (aprox) blocks of wood and sections of 2x6's for stacking. This is similar to what boat yards use when storing boats for the winter. Much more secure and safer. I don't have to worry about the digging into the black top. It also keeps your support rails from getting hacked up from hard steel jack stand saddle.
Good wheel chocks are a must if you go high or will be dealing with stubburn bolt, etc. You can get a good set at Harbor freight for under $10. They always have a discount coupon you can use to get them even cheaper.
AS everyone has said, if you are just working at the wheel you only need to go high enough to get the wheel on and off. You should be able to change everything and bleed it with out crawling under. I you have to adjust the parking brake or replace hard line then you need to get underneath and you will want more room.