Indy's website and catalog show that they have a couple of B EFI intakes. I don't know if either of these actually exist and can be ordered.
400-30 - This might have Max Wedge ports? $750 includes fuel rails.
400-I4-MMBOEFI - Mod-Man intake... still needs a top plate for the intake. $750 + $135 top plate.
As far as I am aware, there are no other new EFI intakes for the B engine. Edelbrock only makes an EFI intake for the RB.
The going rate to convert an existing intake that you provide seems to be $500-$600... so those Indy prices aren't completely out to lunch by the time you factor in an additional $100-$200 if you have to buy an intake to convert.
I am planning to convert a used Torker intake myself.