Interesting discussion of the Delorean power plant from a completed EBAY listing
http://cgi.ebay.com/ebaymotors/Cars-Trucks___1981-Delorean-Coupe-Rare-Turbo-5-Speed-Restored_W0QQitemZ280288513370QQddnZCarsQ20Q26Q20T rucksQQddiZ2282QQcmdZViewItemQQptZUS_Cars_Trucks?h ash=item280288513370&_trksid=p4506.c0.m245&_trkparms=65%3A13%7C39%3A1%7C240%3A1318
The Delorean's engine, while reliable and long lasting, was underpowered for this size (2800 pound) car, so many owners sought out ways to improve power after it's introduction. The factory even prototyped several Turbo models, but never released them for sale, due to the short time the Deloreans were produced in Ireland in the early 80's. The after market jumped on this power issue and quickly released a specially designed purpose built Turbo kit for the Delorean that added the needed power to the PRV V6 engine. The result was outstanding, and the resulting power output made the Delorean's power to weight ratio much better, and improved the driving experience greatly. The Delorean Turbo aftermarket kit used a Rayjay/BEA turbo that was used extensively in the aircraft industry. The kit is professionally and purposely designed for the Delorean, using specially designed aluminum castings for the plumbing and makes the car look so good that it looks like it came from the factory with a Turbo. This rare but greatly needed option added significant power to the V6 Volvo engine, and made the car really respond like the American market had come to expect from an imported sports car. This option easily adds $4000-5000 to the value of the car over the value of a non-turbo Delorean, and makes the driving experience much more fun. It brings the power up make this very sporty looking car perform like it looks. Bottom line - If you buy a Delorean without a Turbo, you will likely be disappointed in the performance
EDIT: which car will be the most valuable in 50 years- the Delorean, in my opinion.