Okay, so in the next two weeks I plan on purchasing some lowering springs (can't decide on tanabe df's, progress, or tien s-tech), and I have a few questions about the alignment. I read about people using different sized 'spacers' or 'shims' to change the camber(?) or angle of the wheel. I was wondering if I took the scion in for an alignment after installing the df's (that is my top choice for now, feel free to speak pros-cons) if they would be adding these spacers or shims, or should I order some and where from. I have 17x7 wheels btw (if that helps). Any input is good input. Thanks!!