SB 4spd bellhousing 5.125" or 4.807" index

Just like the title reads.

I'm after a 5.125" or 4.807" index small block bellhousing.

I have a 4.354" bell and a 4.160 bolt circle on the case. I can make it happen if I have to, welding up the fork pivot holes and repositioning them to clear cutting the bell to a 4.807" hole, but I'd rather just get something that will do without cutting this bell and pass it along to someone else who can use a 4.354" index on their case.