"FrankenDuster I love that Charger! What RPM are you at when going 55 and 60?"

Thanks for the kind words!

My tach crapped out recently. It could be the fuse, I have just been too busy with work and another car project to tinker with it.
Its been a busy year. I changed the cam to the MP 528 Solid and switched from the 3.91s to the 3.55s. If I recall, I was at 2800-2900 at 65 mph. I have some 3.23s, but this 3.55 chunk has new gears and a rebuilt clutch type Power Lock diff. I don't commute with the car, so the gearing is a decent compromise for me.