you can bore the stock TBI intake out. Ghosst did it. You can't bore out the Edelbrock TBI intake, the walls are too thin.
'89 Formula WS-6
[soon to have Hooker 1-5/8" 50 state legal headers installed]
305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips.... Super GRK_Taz World EFI & Intake Options
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