Sierra 18-5298 Electronic Conversion Kit - Prestolite V8 DistributorsSierra high-quality electronic conversion kit for use on Mercruiser Stern Drives. For most Prestolite V-8 Distributors (with snap down cap) Replaces points & condensers for true solid state ignition; Uses standard coil, cap & rotor; Easy to install, one-piece, 2-wire hook-up; Accurate to within 1/4 timing accuracy 0 to 6000 RPM range; Use with: 18-5466 Hi-Performance Ignition Coil; Interchangeable with: GLM; 72530; Mallory; 9-26903; Application:Mercruiser Stern Drive 233 FORD 351; 1975-1977; s/n 4173000 thru 4902304; 233 MIE FORD 351; 1975-1976; s/n 4173000 thru 4775784; 888 2 BBL FORD; 1971-1977; s/n 3108723 & up;