If you are removing the engine from a wreck, take everything you can carry. You're spending a lot of money with the seller, and they're likely in the mood to let you take whatever you want. So get the intercooler, even smashed it has value, and all pipes and plumbing. The crossover pipe, for example, is desirable to 10V owners doing 20V I/C upgrades. You'll be able to sell whatever you don't use. Use common sense, BTW in evaluating the condition of the engine from a wrecked car. I insisted that the engine be run, however briefly, before buying. The engine is designed to participate in energy absorption in the event of an impact, so insure that it is undamaged. Finally, depending on how anal retentive you want to be, think about host of miscellaneous items you may want from the car such as owner's manual, or any engine-related stickers which appear under the hood. I photographed the donor car's VIN plate and odometer, just for documentation purposes.