As said above, Bosch plugs are $40 a pop P.O.S. Don't ever buy them for anything... ever. V-powers are good and cheap. you can pick up a full set for a little over $13. You can use the same plugs as in the DE, but optimal for increased compression would be a range colder plug. Use the number in above post.
94 Mazda MX6 LS - yep, blew it up again.
93 Ford Probe GT - the $200 DD.
03 Ford Windstar - the ManVan!