Is your engine the 160ho or the yx160, if its the 160 ho im pretty sure the 184 bbk takes it out to 177 and if its a yx160 then it takes it out to 184, yes you can do both together and you will **** yourself when you first ride it lol. You can do one of either without the other but if i had the coin and it was me id do both, a new carby also would be the go, im pretty sure DHZ does the bbk,v2 and carby setup, id check that out mate.