CC isnt all that bad..... if you were to read what is clearly posed to read from the get go..... and lurked a whole lot more before you posted as a reference to getting your ass handed to you from not doing just that..... I am sure it would have gone over a whole lot better. But you also just kept throwing gasoline onto your own fire.
They welcome the right to disagree but wish that those who do would educate themselves well enough to disagree intelligently. But in the same right, dont expect or mistake knowledge for understanding. Testing the water before you jump into the deep end, is just plain common sense.
If you are looking for real answers, have you considered asking someone that has actually pulled this off in a (sort of dimentionally) similiar chassis ?? I am sure they will tell you the very same things that you have been reading. Why not give Tyler at ATS a call.... he's done it already and can tell what you need to hear. Albeit he used the entire C5 IRS, as opposed to the F8.8 IRS you are considering, the control arms are in the chassis and he might be able to give you some ideas on overall diamentions, concerning width and fitment.
Why not just use the entire F8.8 IRS suspension all together ??
I believe you are going to have to sacrifice some of your wants to make it actually work.... or you will jeopardize the desired kinematics of the suspension to do its job in a safe manner. You cannot just start shortening/lengthing components to mearly make it fit and expect it to work. No matter how cool or trick the factor is. You are going to have to ditch the deep offset wheel idea right off the top of it or you are going to have to widen the body about two feet to make up for it. That is reality. Well, if you limited the suspension travel to about six inches.... you could possibly work around that......
Mark said it straight up. He is in the suspension business, and specifically has knowledge of rear suspension to back up what comes out of his mouth. There is damn good reason that you dont and/or havent seen a whole lot of chassis with suspensions that you are considering in the way of IRS. Even the big old school cats in the industry havent even crossed that bridge..... and for that same good reason.
If you are really sold on the whole idea of an IRS suspension and want to pull it off with the components you want and with the other cumulative ideas that you have stated, its gonna take some research on your behalf to get you to the point of understanding the differences. If you want to read it for yourself as to why this whole CC thread and the other threads on the other boards are looked upon as they are, consider further educating yourself in the specifics of what you are asking. Basic geometry, basic kinematics, read 'Chassis Engineering' by Adams, read 'How to make your car handle' by Phun, read 'Engineer to win' by Smith, 'Fundamentals of Vehicle Dynamics' by Gillespie and 'Race car vehicle dynamics' by Milliken.
You are not going to learn anything by mearly asking questions. No one can give you an answer that you will understand unless you have the fundamentals to approach the question from the right direction.
BTW, FWIW..... "Bling" is a useless waste of money, time and resources that does and proves nothing to anyone. With the exception that those who do see and understand it, know that your wasted efforts are for nill. If you wanna keep up with the Jones'.... go get yourself an H2, a couple of Weimaraners and a Starbucks speed pass.
Other than that Nova........ I'd personally like to see you pull it off. Daring to be different is what the real payoff is and where the respect is gained.