Do strut tower braces make a noticeable difference in stiffness and handling?

ehh.....little bit.....depends on how stiff the current chassis is. Also helps if you have other suspension mods as well.

i've had a little experiance with strut braces and they seem to do a lot with the vehicles i've had them on, 97 eclipse rs. and a 94 integra gsr, which had a factory brace on it, but i could tell a great difference when i put on the aftermarket piece