Read this young grasshopper:
http://www.toyotagtturbo.com/forums/showthread.php?2493-What-is-a-Panhard-Rod
Cause when you lower the car it pushes the rear drivers wheel out and you MAY get scrubbing.
However i've just putting my meisters on and it's low enough and the wheels dont scrape and im running 15x7 ce28's with 205/55 r888's sooo not really needed imo.
im running no after market panhard rod with my car malcolm..(u seen how much work its had)..
and not had an issue so far without one..
whatever you do get a 4 wheel laser alignment with the coilies..
It doesn't matter whether it scrapes or not, the rear wheels in relation to the front will be out of alignment as soon as the car is lowered without an adjustable panhard rod.
So as long as i get them 4 wheel laser alligned should be ok?