Well I'm about to drop in my new 350, and I have a couple of questions, first, which aluminum manifold will fit under my hood, with the carb on top? Second, will my little 305 qjet feed my 350? I think the qjet is 650cfm or at least capable, so uhhh, will that feed my 350? The 350 is a 00' Goodwrench with a XE262 cam, and stock heads for now, soon to be vortech, and vortech intake (will that fit under the hood?). Anything I should do to this QJet first?

 

Yes to everything. See the tech articles for getting the most out of the q-jet. If you're going Vortecs in the near future, it doesn't make much sense to get a new manifold now that won't fit them later. But, Performer, Action +, ZZ4 (GM Performance Parts) will all fit.

With the Vortecs, the only problem you may encounter is the lack of exhaust cross-over passages in the head to feed the EGR valve. That can be overcome by routing exhaust from the exhaust manifold/header up to the cross-over passage in the intake.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. 2-1/2" cat-back, ZZ3 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 CC system w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker 2055 headers, 3" Catco cat & 3" catback, restalled TC, Spohn SFCs).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).