Assuming the intent is to use the engine and transmission, you would be better off doing the opposite and retain the electronics from the ISF donor car. Then salvage the front and rear subframes, drive shaft, diff, knuckles, suspension, control arms/links. Also, the F has a stronger body, that would be harder to duplicate.
In short, have both the IS350 and donor ISF in the same shop and disassemble them together, noting the differences and make the required modifications. Then publish a book, raid local junk yards to piece together kits, and take your shady enterprise to ebay/club lexus.
In short, have both the IS350 and donor ISF in the same shop and disassemble them together, noting the differences and make the required modifications. Then publish a book, raid local junk yards to piece together kits, and take your shady enterprise to ebay/club lexus.