Model # 4160, meaning it has a metering plate on the secondary side vs a metering block.
600 cfm, vacuum secondary control, standard primary metering block, meaning when adjusting idle mixture, CW leans, CCW richens.
Requires Renew Kit #37-119 or Trick Kit #37-933. Has #66 main jets, 6.5 power valve, &.025 discharge nozzle for primary pump nozzle.
Use a vacuum gauge to register full intake vacuum and adjust for highest reading.
CXarb/engine should run great providing its a stock engine.