I can tell you neither a Tomahawk or a T2 will seal a 2.400 tall port as KRE CNC E heads have. A 2.3 the T2 on some but not alot at the top, probably not the Tomahawk. Both need weld. The original Holley Intake the Tomahawk was based on will just barely seal a 2.400 port.
My T2 does OK for just a 3/8 spacer and a real Shaker base Cliff
For you all looking at the Tomahawk Cliff has found some issues using a Q jet and no spacer, I have some flow number here years ago and what it does with different carbs. The Holley is more centered so the primary bores can flow easier into the front runners on it with it's shallow plenum.
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Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune
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1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
1964 Corvette Coupe 327 4 speed