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		| Vacuum advance for fast street 390 do I need it? | 
	 
		| By Jeff Barrow - 10/03/2000 2:23:25 AM; IP 203.167.247.214 | 
	 
		I’m thinking of upgrading my worn out standard factory distributor with the MSD 8549 billet version mated to the MSD 6AL box. This MSD dizzy don’t have vacuum advance. Do I need it for my car? 1968 GT390 FB Mustang, 750 double pumper carb, holley street dominator intake, hooker headers, 270H Comp cam, C6 gear box with 9” LSD and 3.5:1 gears, running standard 10.5:1 comp. Thanks Jeff   | 
	 
 
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