Which ones would be better on an automatic 2000 mustang? i know i need a t-lok too... and what are the best lowering springs to get that have decent ground clearance ?

 

https://mustangforums.com/search.aspUse it, it's your friend. This topic has been covered countless times.

 

A general rule of thumb is 3.73's for a 5spd and 4.10's for an auto.

I would go with 3.73's because they would feel a lot better than the stock 3.27's and still keep the hwy. rpm's within an reasonalbe range. If you not interested in"max" performance then 4.10's are too much for daily driving, in my opinion.

Spring: a lot of options, Ford Racing offer some varialbe rates ones for a good price. Straight rate springs are cheaper.