I see you also recomended me the Zeeltronic. I'll make some research about it. The main problem for this bike at least in Spain (where I'm from) is that there's not really any market for it, and it's a shame really. I saw the carburetor as the "accesible small powering piece".
I just dont want to change the cylinder or big things like that, just a small thing to change the performance of the bike without going for too much, just a little push. If Mikuni is good brand then i'll search for a 32 Mikuni to keep the line of being always equiped with Mikuni.
I bought the bike with a Gianelli exhaust with homologation. I see almost every DT with installed Arrow, DEP, Turbokit or Gianelli exhausts kits. It's the only aftermarket thing installed to it.
Now before changing carburetor or anything else, I need to fix the regulator, alternator and battery, and then i'll see.
I see you're also pretty close with the bike, and very aknowledged about it. I really aprecciate the advice you're giving me.