valve seats for CHEVROLET R20

For CHEVROLET R20

Year	Make	Model	Engine	Part Type	Part Number
1988	CHEVROLET	R20	V6, 262 C.I., (4.3L), OHV, GAS, FI, 12 Valve, Vin Z	Valves	MW-133 EX
1988	CHEVROLET	R20	V6, 262 C.I., (4.3L), OHV, GAS, FI, 12 Valve, Vin Z	Valves	MW-144 EX*
1988	CHEVROLET	R20	L6, 292 C.I., (4.8L), OHV, GAS, LPG, CARB, FI, 12 Valve, Vin S, T	Valves	MW-1490 IN
1988	CHEVROLET	R20	V6, 262 C.I., (4.3L), OHV, GAS, FI, 12 Valve, Vin Z	Valves	MW-156 IN
1988	CHEVROLET	R20	V8, 454 C.I., (7.4L), OHV, GAS, FI, 16 Valve, Vin B, J, N	Valves	MW-163 IN
1988	CHEVROLET	R20	V8, 454 C.I., (7.4L), OHV, GAS, FI, 16 Valve, Vin B, J, N	Valves	MW-1661 EX*
1988	CHEVROLET	R20	L6, 292 C.I., (4.8L), OHV, GAS, LPG, CARB, FI, 12 Valve, Vin S, T	Valves	MW-1677 EX*
1988	CHEVROLET	R20	V8, 305 C.I., (5.0L), OHV, GAS, FI, 16 Valve, Vin H, M	Valves	MW-186 IN