if i get lowering springs will i need a camber kit and how hard is it really to put in

http://cgi.ebay.com/ebaymotors/TEIN-S-TECH-LOWERING-SPRINGS-SCION-TC-05-07_W0QQcmdZViewItemQQcategoryZ33582QQihZ017QQitemZ270228532155QQrdZ1QQsspagenameZWDVW

here's a better price at a more reliable place with free shipping.....

http://www.showstoppersusa.com/product_info.php?cPath=51_132_134&products_id=444

there's to many knockoffs on ebay which i wouldnt trust. its possible you'll need a camber kit, its not necessary unless you dont want uneven tire wear on the rears. i had a local shop install mine.

If you know a tad about suspension on a car, it is very easy to do yourself with a spring compressor. Air tools will make your life easier, but it'll be fine if you just have your hands. Be sure to have a torque wrench too.

thanks for the site but should i get a camber kit? and will my car ride bad if i don't

An Alignment shop can fix the camber for you without camber links some can some can't, start calling.