|Before installing the subframe you should take the time to carefully inspect the bottom of the car. You should look for torn or cracked CV boots.
Torn power steering boots. Oil leaks. General condition of A/C lines and power steering lines. Condition of cooling hoses. etc...
If your car has over 100K miles and the alternator has never been replaced, this is the perfect time to get this out of the way. The chances of it failing are pretty good and the process to change is a real PITA when the subframe is up. It will be money well spent!
Essentially the install process is the reverse order of removal. There are no real tricks. Just make sure you don't have any big bolts left over!
I used my two jacks to locate the subframe under the car and slowly lifted it into place. Make sure the radiators are going into their holes and then attach the rear motor mount.
The hardest part was actually getting the ball-joint and bolts connected.
Be sure to torque all of the bolts properly. This is where the haynes manual is very useful.
Don't forget to bring the car for an alignment!