Also guys, lets say i get this Tlok installed with the 4.10 gears. What other sort of things do i need to change? Speedo? Anything else goin on i should know about?

you sould do all your seals and things in your rear end to do the speedo if your car is a auto then you need something like a xcal2 to change your speedo you can pick one up used for 200 bucks or so if your car is a standard there is a modual you can get but the name of it ecapes me right now

Do you HAVE to use an xcal2 or something, does it just make your speedo not show probably? If so how far off does it go, and if i only put in a traction lock and not gears do i still need to do so?

if you just do the t loc you don't need the xcal. if you do gears your speedo will be off i don't think there is any other problems. Here is a thought if you can find a 8.8 rearend out of a 99 to 04 that will give you the t loc and a stronger rear end and save you on labour charges the hole rear end should cost you 800 to a grand. but they shouldn't be to hard to put in your self if tou buy gears and a t loc say 500 bucks then labour seals fluid and the install kit you will be up near the cost of a hole rear end. how ever you will still have the factory gear ratio.

have you been to the wreckers at all i have a t loc sitting here for a 7.5that one day i will get around to putting in i got it for 30.00 bucks and the fuel to drive to niagra falls to pick it up

Doing a rearend is NOT cheap!
Im not sure how your tranny is, but I do know in the T-5's there is a speedo gear you need to change to make your speedo correct or "close to" I had to install a white gear and it was like $25.00 from DaSilva's.

Here ya go....this will give you a good idea on whats going on......
Gear swap in 8.8

a have a brand new set of 456 gears you would love those $190

Labour is free for me. So i'm only worried about getting the traction lock and whatever seals etc i need. What should I be looking for in the junkyard that would have the tlock i need? I hear its in some rangers and some older stangs...anyone know exact years?

[QUOTE=Stang Illusions 5.0L;92183]Doing a rearend is NOT cheap!
Im not sure how your tranny is, but I do know in the T-5's there is a speedo gear you need to change to make your speedo correct or "close to" I had to install a white gear and it was like $25.00 from DaSilva's.

on the 99 to 04 it is all done with the computer. As for the years i think it was the early 80's rangers and mustangs

94-98 have a speedo gear in the tranny.
Not sure about 99+

Alright, someone has to have a junk or parts early 80's 5.0L sittin around. I'll come get it out, but does anyone have one i can buy the traction lock from?