They aren’t easily interchangeable because the two mounting bolts are even further apart about the Blacktop trumpets. Remember to see “Throttle bodies” For more info. Also the opening of the Blacktop inlet ports are around four to 5mm wider at their entrance over the Silvertop supplying a bigger cross sectional https://jdmtoyota4a-ge60370.ourcodeblog.com/32370596/blacktop-4age-secrets