valve seats for GM

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Competitor/OEM Name	Competitor/OEM Part	Part Number	Part Type	Note
GM	90220111	MW-279 EX	Valves	0.030 Shorter Than OEM
GM	90220112	MW-279 EX	Valves	0.030 Shorter Than OEM
GM	90220119	MW-1817 IN	Valves	0.030 Shorter Than OEM
GM	90220121	MW-680 IN	Valves
GM	90220125	MW-271 IN	Valves	0.030 Shorter Than OEM
GM	90323756	MW-681 EX*	Valves	Stellite Face
GM	90323757	MW-279 EX	Valves	0.030 Shorter Than OEM
GM	90410816	MW-1379 EX*	Valves	Recommended OEM Nickel Base Inconel Material, Stellite Face