nice! basically what mike and i had in mind except you managed to keep the pulse hole usable and avoid rerouting it.
now you just need to be sure that the lack of insulation isn't a problem while running.

if heat is a problem then you can just make a new adapter out of 3/8" phenolic or epoxy board. this can also be threaded for the 2 carb bolts without the need for inserts or nuts. but being thicker than the alum adapter it would be better to grind the little pulse nipple off flush with the surrounding area.

now run it!

dave