This has no relevance to your 2nd gen but most of 3rd gen 4.7/5.7 folks i have seen regret going from 3.92's or 3.55's to 4.10's and typically end up switching to 4.56's down the road.
I noticed a difference from 3.55's to 4.10's w/ 30" street tires but i regret not going to 4.56's the first time.
Now she is a hole shot queen cause i now have 4.88's and rear 28" drag radials full time.
IMO i would go right to 4.56 and get that 4 door beast moving. It will feel like it lost 1000lbs.
Last edited by TheSatinPumpkin; 07-08-2011 at 06:41 AM.