That would be different!
What do you hope to gain, other than the different part?
How will the exhaust work around the carbs? Will you have vapor lock problems?
Is there room for plumbing to an air filter for the front carb?

When you start cutting and welding, it may be beneficial to bolt the manifold solidly to a spare/scrap head, and only unbolt it after it's all done, may reduce the warpage.

Will you have glass floor boards to show it off?

Take some pictures,
Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-