Or you can use an adapter. I don't like 'em, but for using a square bore carb on a spread bore manifold, it'll work. The open plenum may even help to make a little power, maybe yes, maybe no. It's a crapshoot as far as using a spacer for making more torque or hp.
http://www.summitracing.com/parts/trd-2066/overview/

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