Moroso Weld-On Round Breather - 1 in Threaded Bung - Clamp-On Filter H753C42 The trailing arm holes are

The trailing arm holes are threaded 3/4-10 and the shock mounts are 1/2-13

designed for use with Motorola Mag One BPR40™ radios

Use only top quality Bilstein Shock Oil for maximum performance from your Bilstein

1973-1980 Chevrolet C20 Suburban

Moroso Weld-On Round Breather - 1 in Threaded Bung - Clamp-On Filter H753C42 The trailing arm holes areProduct Description: Breather Weld On Round 1 in Threaded Bung Clamp On Filter Moroso Performance Products is one of the worlds most respected suppliers of automotive equipment for racing and street performance applications. Moroso manufactures over 4000 products, from oil pans and oiling systems, to ignition wire, ignition components, valve covers, fuel system equipment, air cleaners, hard core racing tools, chassis and suspension equipment and