GM AC DELCO LEAD SET
No matter if you have the 305 / 5ltr or the 350/ 5.7 ltr.. if you have the TPI.. TUNED PORT INJECTED V8 this is the genuine set of leads.
Cheaper aftermarket set is # PW210512E
TECH Help:
Chevy Small Block #1 cylinder location is LHF -
Clockwise... Firing order: 18436572