I know this is an old thread, but maybe the following will help someone else building a Chevy SSR kit:
I used to not only own an SSR, but I authored the book "The SSR Experience" which described what an SSR is and how to buy and modify one.
I, like I suspect everyone else, never took many photos of the underside of the chassis normally, BUT, in preparing the book, I had to take a number of high resolution photos showing specific areas (e.g. the driveshaft u-joints, because GM had a lot of trouble with premature wear there because of the spring aluminum driveshaft). If anyone really wants chassis detail photos, if he or she leaves a private message for me that includes his/her email address, I could email those photos.
The other thing that might help builders if all else fails is that in order to get the SSR to market quickly via using an already existing EPA-certified chassis, GM used the then-current Chevrolet Trailblazer chassis as the foundation for the SSR. The mods to that chassis were as small as GM could arrnage them to be. The biggest were the hard to see mods that lowered the suspension, as the Tralblazer SUV was way too high for the low slung SSR. Another key change was placement of the battery at the passenger side rear, in the chassis, under the bed of the "pickuP box". So, if all else fails, look at at 2003 through 2006 Trailblazer and you will undeoubtedly be reasonably close on details.