You can use the Trans-Dapt 2107 adapter to mount your carb an inch or two higher; that's what I did. It's made for a Datsun but fits our manifold bolt pattern perfectly, gives a bit more low-end torque for slightly less high-end peak power, but these engines aren't real high-revvers anyway, and torque is preferable for haulin' duty.
Note if your manifold has a coolant port in the carb mounting flange for the stock Mikuni, the Trans-Dapt won't fully cover that port like the Redline adapter plate does, so you'd need to tap that port with threads to accept a grub/set screw (M6 or M8, I forget which) as a plug.
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