This is never an easy task. The Noob GMT Pepsi jubilee is the best one but the fit to a Noob V8/9 is not optimal. The bottom of the SEL is just a tad too thick for it to clear the case lip. One might be able to grind it down a little but as the bottom moves toward the case, the top may pull away from the case as the SEL rotates around the springbar. You could almost get away with it as is. Almost...
The Sub is a Noob V8, the V9 case is identical.
Underside - Sub
Underside - GMT
This bracelet is from an older 6-digit BP GMT. The fit is better but not great
I think maybe a better solution for this option would be to find a GMT case that can fit either an oyster or a jubilee if you want to be able to switch around (there are several) and just convert it into a Sub case - swap crystal retaining ring, bezel, movement with dial/hands. The movement would have to fit the case of course. I've done that in the other direction. Used a Sub case to make a GMT. Not a big deal.