i just got through having my 31 spline eaton, 4.10s and moser axels put in and WOW what a difference...only regret is not going with 4.30s! The rpms are not bad at all on the highway with 4.10s im at 2100rpms at 65mph. The car spins BOTH the tires so frekin hard now !(was only spinning one with my stock diff) I cant wait to get to the track and put on my drag radials....Just out of curiosity what do you think my times will be? LOOK in sig for mods. And how hard would you guys launch? What is the next weak link in my car?