Difficult to get A833 four speed into reverse

Not sure if it's impossible but the A body 833 trans is much shorter and the shifter location is closer the main body of the trans. The B&E body trans shifter location would be in the rear tailstock. Someone could have swapped out the tailshaft and that's the only way I'm aware of this transplant working ?
Bennoel 10, well with over 50% of this car NOT being stock, anything is possibly. It's evident I'll need some professional help in 'tuning up' the shifter and likage since it's beyond my capabilities. I do know when I'm out of my element!