Mine has everything the same, but it's 4WD and it has 181k on it. I don't think it's carbureted. Some type of special injection. Can't really remember the fancy technical name Nissan gave it. To tell you the truth I have only had the hood open on it 3 times. Once to find out what engine it was, 2nd to change the oil, and 3rd to clean my battery connections because they were corroded.
Wait a sec. I'll just go and look. Hehe. Electro-injection. So I'm thinking no carburetion.
But the problem does sound like the fuel system.
I posted about the problem on Windsor Power.
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Previously "BennyBoy"
'69 Coupe with 351W-I rolled it 8/8
Edelbrock RPM intake, Edelbrock RPM cam, Edelbrock 750 cfm carb, Hedman headers, 2 1/2" pipe, glasspacks, C4: shift kit, 9" Currie: Trac-Lok 3.70s, 290hp-stock heads
Starting Project "2ND COMING": 1969 Fastback