Benforsp, bite the bullet & buy a dual pattern base plate carb, with the carb i bought, i now know this carb will fit all my street/strip big block combos. compared to the stock Holleys this carb is a work of art. if you look at my previous pic you'll see i made my own shear plate from phenolic plastic to seal up the transition between the 4500 & 4150 series carbs, but it dont look as flash as Andys one but it does the same job. as for cutting out the intake runners on the Indy manifold. it was the best thing i did, it made plug reading so much easier when every plug became the same colour. i don't understand why Indy made their manifold this way, the Super Victor wasn't like this & it works great.