IDA Stacks

[Rick]

Are there any sources for alternative Air Stacks for 48 IDA's. Specifically the type with the smooth, rolled over edge, in lieu of the OEM design?

 

[John Fitzpatrick]

Not sure just what yu're looking for, but you might try these
INGLESE INDUCTION SYSTEMS-- Weber Carburetion Builders
or
Weber Parts

They also show up on ebay from time to time.
Good luck.