Well as far as ford racing is concerned, I was on the phone with them and spoke to a technical advisor and he also confirmed that the spring rate is different. At the time I spoke to him they had not produced one for the 2011. Now that not to say that some guys that are impatient or live by ford racing products havent used the 2010 springs. But in order to do that they had to add a few other products in order to compensate.Steeda in Milton can put their springs on also, but they too are 2010's and need to add other components to make them right.
So in other words if you want a spring and only a spring to replace you oems without having to spend more money, Eibach is the way to go.

No biggie dude - your post just came across more like a commercial for Eibach and that shop in Hamilton, thought maybe you worked for them or something. I must have just read it the wrong way - I don't live by any company except what rolls off the line in Flat Rock, can't afford to be throwing away perfectly good parts when there's bills to pay.

No problem buddy.Great point. Thats exactly why I am recommending these products and dealers.This is my 3rd mustang project and each time I have spent well over $25,000 in modifications to each one. So through a lot of hard work and sometimes not always the right choices in picking the best products I have made some mistakes. But over time you learn a bit about making sound choices. Maybe thats why it might come across as a plug. Just want our fellow mustang owners to get the most out of their hard earned money.

I totally get where you're coming from now - makes sense, thanks for throwing that in.:tup Besides, I'm not going to argue with a guy that has stats in his bio like 6 foot, 205 lb body builder!! :eek:ha ha ha ha

thats funny. actually ex mma fighter, not bodybuilder.bodybuilders cant fight worth the sh..t., but thats another story.
sorry it seemed like an argument.just a simple debate in my eyes. looking forward to more. Good talking to you Apocalypse Pony. From one addict to another.lol.

Addict indeed. Ha ha ha - bodybuilders can't fight worth ha ha ha funny stuff - apologies for using the wrong term. Man, that MMA is caged insanity, and yes, simple debate is more what I would call it too, just some folks tend to take things too serious, so it's good to see you got it.