ii was half joking lol, stuff getting caught rebirthing cars/engines... couldn't imagine the fine but i'm sure it would come under the title of fraud lol
and yeah sure its legal to swap from 5.7 to 6.0 but then he wouldn't be able to drive it would he ? because its a v8 lol
short in short no you can't drive a vehicle with an engine conversion, regardless of how similar they are or wether not you can use the same engine mounts, you would need n engineers cert therefore it would be modifyed...