Hi Hassome,
I’m going oi give you an “opinion alert” here as I haven’t had a lot of experience with Kaura cases yet. Let’s assume that they follow a similar logic array as we did in designing our SCGC cases. That is to have an initial fit that is very snug and allow the padding to progressively conform to the precise shape of the guitar through successive placements of the instrument into the case. We dialed this in to work perfectly with each of our different models.
Unfortunately, even with your photo, I can’t assume that the Kaura padding will compress enough to allow the lid to close without undue pressure on the guitar. I strongly suggest that you contact Kaura to find out what their target measurement is for the guitar’s depth at the tail for their OM style case and compare that to your SCGC OM at within +/- 1/16″ of 4.25 inches.
If Kaura targets a Martin OM you should be OK. Martin claims a depth of 4 1/8″, though I’ve seen Martin OM’s vary to as much as 4 1/4″. This means you should be safe if you don’t try to store a song book or strap on the top of your guitar before closing the lid.
All the best, Richard