BB 727 to A518 Conversion

I don't think you need to go to ultra bell. I believe someone makes an adapter to mate a B/RB to the SB bell. Frankly, if you know a decent machinst, you should be able to come up with that yourself.

Here.......

http://www.forbbodiesonly.com/moparforum/threads/440-to-904-adapter.70978/