Here is a pic of the air-cleaner I was refering to on my /6. It is a 14" drop down air-cleaner. You can see how it covers half the carb.
I would start with the Edelbrock heat gasket 340sFastback refered to.
Then go with a 14" drop down. It should clear your trans linkage. Kind of trial and air with this kind of stuff.
Take care