Calico Coatings H-Series Main Bearing - Standard - Extra Oil Clearance - Coated - Small Block Chevy MS429HX 4101XXSBK MSD has the answer with

MSD has the answer with the Distributorless Tach Driver

Filter Element is 6

May be used on 348 engines with valve lifts up to

1965-1987 Cadillac Fleetwood

Another major change to this new unit is that the box itself has a controller as well as a wireless infrared remote control

Calico Coatings H-Series Main Bearing - Standard - Extra Oil Clearance - Coated - Small Block Chevy MS429HX 4101XXSBK MSD has the answer withProduct Description: Main Bearing H Series Standard Extra Oil Clearance Coated Small Block Chevy Calico coated bearings are coated with their CT 1 Dry Film Lubricant coating. CT 1 is specifically engineered to withstand the extreme conditions of today's high performance engines. Professional engine builders enjoy a higher level of confidence with increased embed ability, strength and durability.