Engine Distributor Vacuum Advance Canister Fits GM HEI Models Adjustable Style Proform Engine Rocker Arm Kit Each cover includes two bolts

Each cover includes two bolts to stabilize bearing main caps

Comes with instructions and all necessary non-stick replacement gaskets

Also Includes Electronic Control Unit Box

Air Pump Idler Bracket Kit

and 360 engines

Engine Distributor Vacuum Advance Canister Fits GM HEI Models Adjustable Style Proform Engine Rocker Arm Kit Each cover includes two boltsEngine Distributor Adjustable Vacuum Advance. Fits GM HEI Models 1996 and Earlier. Will not work on Computer Controlled HEI Distributors. Adjustable Style allows user to fine tune the Vacuum Advance For optimum performance. Sold individually. Product Details: Engine Distributor Adjustable Vacuum Advance Fits GM HEI Models 1996 And Earlier Will NOT Work On Computer Controlled HEI Distributors Adjustable Style Allows User To Fine Tune The Vacuum Advance