I went to the coop and spent $6 on Blaze levers for the hoods.

The first photo shows the difference between the Sprint/Superb lever and the Blaze/BL07 lever on the right. The Blaze lever body is clearly longer and has a different horn.
Second photo shows the Blaze lever inset and the ridge on the inside of the Blaze hood. I sliced this mostly off.
Final result. The Blaze hood stretches around the Sprint lever nicely, but it is long on the handlebar end, as Hondo mentioned. The old Sprint hood doesn't fit the Blaze lever at all.
So I would say this is a succes for the price. Thanks, Hondo!