The Heng long 2.4 Ghz is a million times improved over the old RX18 that used to come with the tanks, unless you just want to change the sound I don't understand why use Clark board? The old Heng Long RX18 was a nightmare, never worked for longer then 30 seconds, and no doubt was the reason a lot of people just gave up on the hobby. Now HL finally got smart and just put the 2.4 Ghz in all their tanks from the factory, and confined the RX18 to the dumpsters of mainland China where they belonged in the first place. They probably got tired of all the returns of their products from disattisfied customers, times ten thousand. Unless you just have an older tank why use Clark board? The HL components are dirt cheap, available everywhere and work to perfection, they even offer two kinds of sounds now, although that may not be enough for the scale enthusiast.