i go fast alot i mean real mph.with the 4.10s you be going 5600 at 155 mphthats to much for me ill be around 5000rpm.we have a high way down here well interstate 20 miles over the bayou no police.thats where i wind it out at now sure you can go 155 with 4.10 but for how long , i should get some 2.73s bypass my limiter and do a post??not downing youll in any way,im just tell ing what i dont like ,,