I have been doing some research of my own on this. I'm wanting to drop my 4BT into a Pop Top frame. Apparently, you can bolt the "stands" from a 6BT onto a 4BT. The stands are the cast iron pieces bolted to the block that the rubber mounts bolt to. I was told that the 4BT will then "drop right in" to the existing 4x4 engine crossmember. This will keep the back of the engine towards the firewall and leave a lot of room in front to stuff in an intercooler and use a factory sized radiator. This cat I talked to claims to have done two of these conversions but amazingly, not a picture to be had ANYWHERE...
I'm no fabricator and my hope is to stay as "bolt-in" as possible.
Please, don't quote me on anything above. Until I see it with my own eyes, it's purely folklore.
Maybe we could start our own thread on the 4BT's when we get more info? I am on 4BT Swaps, as well and you would think that there would be more Dodge applications
I would love to see any/all of your conversion pics too, airgrabber70. I need some inspiration and plans to get this project moving again.