local tranny guy told me that the ones behind diesel 88-92 have a cast alum lower bellhousing that bolts on in place of the stamped steel converter cover.

send pic, price and location.
core is fine too as he can build it for me.

 

I have a A518 which is the 727 with an OD built on the end. Off of a 1991.5 Dodge W250 with 246k miles. It is still in the truck. If you are still interested send me a pm or e-mail troy@handkenergy.com Thanks.