what bike are you putting these on? the mikuni smoothbores will work good with pods, you will just have to play around with the jetting to get them tuned proper
I belive someone still makes custom intake boots for these if your putting them on a CB750 1969-1978. Tommy Summers knows I think, or might be able to point you in the right direction.
Or you could just sell them to me. Yeah. That's probably the best option.