I am building a 408 and i was going to use the rods that are in my car now. They are Scat and i am not sure if they are 6.125 or 6.1. I know they sell both and i bought the car with them in it already. I want around 11.1 compression. I am looking at a -8cc piston with a 64cc head and .053 gasket. That is with a 6.125 rod. If the rod is 6.1, what would the compression difference be and would they even work with my build? Thanks in advance.