Yup, that is my combo. I have a question did I understand you are going with a 5.13 with a sb 350 with a pg? I would have assumed that you would run the 5.57 or if there is a gear in between? But, you will work through that. How did you find out your tach was off? I borrowed a friends MSD tester once and found some problems, also check your RPM chips for resistance, some do vary. Good luck and keep us posted. Also, did you win the round from the video? I like in car video's like that. It looks good.