A833 4speed OD trans Swap Question

I have machined the centers out in the past, but mopar made a bell housing that will fit right in our car.
Brewer's may have the correct bellhousing so everything is bolt in.

Have you drove a car with the od transmission, the gear splits are pretty crappy.
1st real high,
2nd ok but a big drop from 1st.
3rd like 4th in the tranny you have now.
4th drops the rpms aboout 25%