I have a DA-50 on a Wild Hare Bipe . I had sent it in for the up grades and they reversed the carb so the pulse line was short. The other DA-50 I have I did the up grade on the pulse tap and left the carb in the position It was originally in so I wouldn't have to swap the servos and cable.The Wild Hare Bipe the servos mounts were so I reversed the the cab back so the linkage would not have to cross the fuse and be in the way of the gas tank and be more of a straight shot to the carb.Just turn the carb over and leave every thing else the way it was and put the longer pulse line on.