overdrive unit??

[bluebronco69]

so whats your opinions on external overdrives like the ones that bolt on before your t-case or ont he output shaft of the t-case??? are they any good? i would like to find one preferably one that goes on between the t-case and rear driveshaft so that is the only one i have to modify. anyways. anybody have one of those? or know where i can get one? or if they are any good?
thanks

 

[76Broncofromhell]

No, No, No and Search. This has been covered so many times about the Rancho overdrive. I've seen one for sale in the past 5 years and it was about twice as much as swapping in an overdrive transmission.