This is a cast iron exhaust manifold from a 1966 Volvo 122s Amazon. This is understood to be the single pipe version as the design was modified for the 1967 model year.
RED 8MM PERFORMANCE IGNITION LEADS FITS THE VOLVO AMAZON B18 MODELS SHORT COIL
Volvo Amazon 1968-1970 B20b Electronic Ignition Kit - AccuSpark Bosch JFU4,
Volvo Amazon 1968-70 B20A Electronic Ignition kit25
Volvo Amazon AccuSpark Stealth 1968-70 B20B Electronic Ignition k13
RED 8MM PERFORMANCE IGNITION LEADS FOR THE VOLVO AMAZON P1800S MODELS COIL 43.5"
PAIR OF BRAKE ADJUSTERS VOLVO AMAZON & P1800 MODELS 1960-1970