Many years ago a mate had a Duggan headed 292 in a UC Torana.
The front of the valve cover, manifold and the whole carb (same 4bbl manifold pictured) all hung out of the bonnet.
Made heaps of torque but had a lot of problems with balancers and flywheels/flexplates.
Good luck with it !!
That's a feature not a fault when you have an inline 6.