3.5 V8 SU carb adapter

[The_Anachronist]

Can anyone provide a part number for the cast aluminum carb-to-air intake elbow used on dual SU cab setups? (Or better yet just sell me one?)
Shown in the picture, one bolted to each carb at left and right.
Cheers.
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[The_Anachronist]

Bump. The guys with older RRs must have seen these... anyone?