If your intent is to out the 850 engine in the XC, I wouldn’t. Too many differences, even though the blocks are similar.
Find a decent 2003-2006 used LP turbo engine on eBay. It’s a question of what the engine management is programmed to work with, dual VVT, max turbo boost, etc. Your XC ECM isn’t going to work right with a NA or HP turbo engine, or even an LP engine from outside those years, unless it gets a custom performance map.
Which would cost more than the eBay engine in the first place.
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