You can use the Sub frame in the front and rear it's just a pita getting to it if you don't have a very low profile jack or ramps to go off of. I use race ramps, then insert jack, then jack higher than the ramps.Asking the important questions here. Seriously, its hard to think the car has no central jack points. I remember on my old WRX there was a central point in the front but on the rear you jacked it up on the differential.
If your interested in modifications, how-to videos, and comprehensive reviews check out my channel www.youtube.com/c/christopherayresfrs2