Gear Change?

Just found out that i had the 3.90's in my truck i always thought they where the 4.10s. but my door code says B06A so its 3.90's. So how hard would it be to change to 4.10s or 4.30s? and how much would it cost?

 

thanks man the reason for asking is i was thinking of putting a small lift and 32s and i didnt want to lose power.

 

Because you have a manual, you might want to hold off on getting new gears. see how your truck takes to the 32s. you'll probably have to shift later though.