Update, after purchasing a pushrod checker, a length of 7.070 gave me a good pattern across the valve stem. I then ordered a set from Smith Brothers Pushrods, they were very easy to work with and shipped them out two days later. I also had to shave .060 off the intake to get the ports and bolt holes to align. Changing the intake gave the car better low end torque and an awesome throttle response. Thanks to everyone for your input...