Which Certification book do I need?
I want my car to cert to 8.50..Looks like my car has a chassis built that will not meet spec.
What is the diff between 25.3 and 25.4-25.5? The main frame rails are ok which are 2x3 1/8th thick. The rest of the chassis floor pan bracing, and trans tunnel needs to be ripped out etc. Heck the floor pans are steel and .090 thick.
My chassis guys wont put the cage in and cert it like it is. The car has no rocker bars etc.
So the idea is to add only the bars needed in the proper places to make this thing safe, and worth something.

As you can see the frame rails really dont have much support between the two..If It takes alick in the side there is nothing really keeping them from bending together. Also the trans tunnel is pretty small, and shallow. Lots and lots of bars can be removed and replaced by single larger stuffer bracing in key area's.