I have seen pictures of 2 850 to chevy conversions. One even had a 6-71 blower sticking out of the hood. Seen a few early 5 series swaps and I just saw a early 3 for sale with the swap done, just not finished yet. I was thinking the same thing, or wap it into an old 74 2002 or something. I did a chevy swap on my friends Land Cruiser. Turned out great! Love some America power\torque