According to a semi-local tuner swapping an LS1 into an E36 M3, the LS1 is actually 10 lbs lighter than the S50/2.
I saw a swap in progress last week and there are some challenges. The guy said the two hardest things so far were getting the gauges and a/c to work. Most just use autometer gauges but the guy wants to use the OEM cluster in this swap.
Personally, I would never do this.
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2018 F30 320iX Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red
2000 E36/7 Z3 Steel Blue
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