This Interface Module is designed for the large one piece coil unit used on Buick’s popular T-Types and Grand National V6 engines. The Interface mounts between the factory ignition module and coil housing then wires easily to the MSD DIS-4 Ignition Control. Buick Interface Module (’86-’87 only) 8878$193.99 Don't see what you want? .......... Need help? Or, IF THERE IS NO ORDER BUTTON AVAILABLE on the part you want to buy, please call us TOLL FREE at 1-888-6 GO FAST(1-888-646-3278) Monday - Friday 8AM - 4:30PM Pacific Time and talk to one of our experienced Sales Agents. Some parts may not be legal for sale or use in California and other states on any polution controlled motor vehicles. Check your local laws for use. Copyright © GoFastParts.com all rights reserved. No part of this site may be reproduced without prior written consent.