exactly, not everyone wants to run sky high in the rpm range, plus i dont do what everyone else says just because one person says its the thing to do, im not disrespecting you geno, we have both been around this one type of car for years, i was going to put 4:10's in mine too, because at first its what everyone was saying to go with, but screw that, i decided on 3:73's. i dont do alot of highway driving, harly any really, but i do make many trips back and fourth from my house to my shop and i like the car to be quick off the line but also not have a top speed of 100 mph before it wants to blow up. plus with the rising gas i already know i'll lose gas mileage with 3:73's, never mind 4:10's. i'm not saying 4:10's arent the gear to go with, but for me, they arent, and im not gonna go with a certain ratio just because everyone says to. but let the original poster here make his decision, dont put 3:73's in your car just because i now said thats what i am doing, its your car, put whatever ring and pinion in the car that you feel will best suite you, i have owned 5 mark VIII's personally plus hundreds i have parted, i know how they act stock, i have also been in a mark with 3:73's and i know how it acted too, and it was perfect for me and how little i drive. its just the right amount of fun!!!