3.08 gear and an od trans will kill the driving of this car. Your talking on a 26" tire of turning 1800 rpm's at 65 mph, this engine would be lunging on the cam at this rpm under load. I am guessing this thing is going to want to cruise around 2500 to keep cylinders clean.
>>>>little better then stock suspension<<<< It better be a lot better than stock if you really want this kind of power. Your 550 hp small block won't even compare to this in a good dream.................