It is my understanding that to get the wider spaced gearing, the only option is to get a lock-up transmission. Since the trans is set up for it anyway it doesn't seem that big a leap to just use it that way - am I missing another alternative?
You can get the wide (low - reverse) gears from a 904 /6 trans or some later year trans and direct swap them into a V8 904.
Next time I pull the trans they are going in.
I bought mine from a local Mopar guy who builds trans on the side.