Mod help!

Hello! I am looking for trml t200 dual 18650 and their single 21700 mod, think its called r99? Something along those lines! Or any other dual 18650 or single 21700 potentiometer mod that would fit well with the Blaze solo 2 rta, nitrous 22 rda and the stalk rta! I know about the p200 from lost vape and probably getting one of those but there Might be more or better options out there!