833 od 4 speed

Your choses are; 1) to find a bell housing with the large hole, 2) have the bell housing you have machined out or, 3) to purchase the 4.8" 308 bearing retainer to swap onto the OD tranny.

I was fortunate that I was able to swap a 4.8" sb block bellhousing even up for an OD bell housing when I swapped the \6 for a 360 in my Barracuda.