Hey,Greg! Yupp..It comes in quick! I wonder how long the 4.10 Richmond street gears would live behind my tranny brake 512..I know 440Jim runs them but he footbrakes his car. My rear tires are 10.5 x31 M/Tws..After reading this,I remember that bad1970dust has 4.10s behind his 572"...Maybe that is something Rodney should think about? Great discussion here! Didn't mean to rob your thread,Rodney!!