Specifically a '93 454 from a 'Burb for a 6.0 from an Escalde.
The 6.0's can be found fairly cheap on ebay and I could sell the bb for a good chunk of change too. I can handle the swap myself. I'd most likely get a custom harness and get some kind of performance tune for the ecu. I've never driven a 6.0 truck, but the specs pass up the big block in everyway and the 7-9mpg I get now is killer. Not looking at the 8.1 for a couple reasons, the mileage and because they're a bit more expensive and harder to find.
What would you do?
The 6.0's can be found fairly cheap on ebay and I could sell the bb for a good chunk of change too. I can handle the swap myself. I'd most likely get a custom harness and get some kind of performance tune for the ecu. I've never driven a 6.0 truck, but the specs pass up the big block in everyway and the 7-9mpg I get now is killer. Not looking at the 8.1 for a couple reasons, the mileage and because they're a bit more expensive and harder to find.
What would you do?

and easy to fit on 205 tcase.