>As a general rule, the "BOMB" system is found on turbos because there is no >reliable long-term source of vacuum in quantity in a turbo car. The vacuum >differential locks don't need very much vacuum at all, so they're not such a >problem. The Bomb system was aslo on the N/A 84-91 5000/100........ Later! Eric Fletcher '87 5KCSTQIA2RSR2B St. Louis, MO STEADIRIC@aol.com