No the 3.73s are perfect,for how I will use the Bullitt.Now for the ultimate strip car,sure the 4.10 would be the way,I had them way back in my 85 LX,when equipped with the T-5 and 302,which was running 12.6s at 109. If you have the tools and the time,it's not that bad a deal changing the gears,although I was a bit sore from working underneath the car....just middle age woes!!