That is the first thing I did to my car (2.5 years ago) and what a difference it was. Took it to the track with only those mods done ran 14.5 all day. Not to mention it feels a lot better on the low to mid powerband rang.
And as for the RRE custom made product's there are amazing I bought there front and back strut bar braces and there lower A-arm brace what A difference in cornering that made to the car.