What to do strut bars do
I've seen some cheap ones on ebay but no one really trusts ebay
Should i get some?
Read the FAQ.
And not everything on eBay is junk, you just have to know what you're looking for.
From John Lenkos FAQ
What is a strut tower brace/bar?
Strut tower braces or bars are intended to eliminate strut tower deflection and increase chassis rigidity to reduce suspension distortion from acceleration and cornering. The brace also improves the chassis rigidity for better vehicle handling and helps maintain correct suspension geometry.
http://www.j-body.org/forums/read.php?f=3&i=50260&t=50260
