My replica has the WC T-5 trans with the high 5th (overdrive) gear....0.63 I think it is, but I could be off a bit.
I find first gear to be useless for anything other than parades...but that long overdrive gear gets used every time I'm on the road. If I were road racing I might want the closer ratio 0.8? overdrive, but I'm not. My replica gets 25 mpg on the highway and typically runs around 2,500 RPM doing it. My differential has the Ford Traction-Loc 3.73 gears.
As for daily highway use, I start from dead stops in second gear, skip 3rd and go directly to 4th and on to the OD 5th gear, unless I'm tooling around town, then I use only 2nd and 3rd. That OD gets used ONLY for cruising. If I need to pass something on the highway, I'll usually downshift to 4th just to get the rev's up, but never need to go down as far as 3rd gear.
As far as a daily driver, I like my setup VERY much...in fact, in dry weather (NOT unusual here in SW Kansas) my replica IS my daily driver on most days.
Cheers!
Dugly
