I have first hand experience to your question. I just went to Miami(Homestead) for a track day roadracing. i did not have the strut bars on for the event. Then my buddy had some "Ebay" I think they were Bomz upper front and rear strut bars laying around..lets put them on!

i seriously didnt expect them to do a damn thing, well I was wrong! I put them on and it stiffened up the whole chassis. I had never had problems with traction(sliding) and these stiffened it up enough to get the back end loose. Well i just made an adjustment with the tire pressure and its a dream!

I have plenty of seat time with this car with NO strut bars. I now have the front and rear strut bars and let me tell you its a hell of alot faster! Like others have said a bar is a bar, if you go look at most of the racers at the track they arent running any top brand names, only the guys that drive their cars on the streets have the names(granted its not a full sponsor car).

Well, anyways you will be plenty happy with your "ebay" strut bars. GOOD CHOICE, MONEY WELL SPENT!