Just a guess here, Rob.
You found a bell housing for a big block, but it's in a truck?
I doubt very much if the bolt pattern is the same as a 230, but I'm not positive.
Same goes for the bearing retainer dimensions.
What I would do is to slip the 230 into the bell housing, mark the holes, and drill & tap your own if there is enough meat there to do so.
I would love to see what you come up with.........
