Here is a Ford Holley base plate number 12R-1836 B. Original on 1973-74 Ford F250 truck with the 390 engine and automatic transmission. Base plate is in good condition no cracks, throttle linkage moves freely. Primary throttle plates sted 107 and the secondary 118.It can be picked up at428 Grasslands Rd.Valhalla N.Y. 10595I can ship if you like. Call or Email me your address or Zip code for shipping charges. Ask for George.