Dear Jerry II,
That's about right...
I live in Chicago and just had a place install 3.73s in my automatic...
I purchased a Ford Racing Gear Set for about $180.00 and they did the installation for $375.00 including gasket and fluid...
Maybe in a smaller town, where the rates are lower, you could get the same job done for less...
As far as how much time is required, I don't know because I left the car in the morning and picked it up in the evening (had to work to pay for it)...
My total was $555.00...
Dave
