Reread my post with the "PLAN"...
With a daily driver, I would NEVER install a cage (thats just me). It would be difficult getting in/out, and the rear passengers would be dangerous with all those pipes in an accident..
I roadraced my car for a few years (not many events), and finally "wanted" to put in a cage. Yeah, it'll stiffen the frame a bit, and hold my shoulder harnesses correctly (not y-belt to hatch area), and I wanted a REAL camera mount. Those are the reasons for my cage.
Make sure you get good tires (whole new thread, here we go...) :-) But the performance stuff you are adding will only be limited by the 205's in front. Save money for some 245's that'll fit easily.
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Darius Rudis
Home built t-arm/panhard suspension powered by an S-trimmed motor :-)
My Mustang Page