I have a Holley List 3609 780 CFM carburetor with a GM part number 3892339 and date code 504 that has been converted over the years to a 4150 with center-hung floats. I want to return it to its original 4160/end-pivot float configuration but I'm having trouble locating a chart showing the proper metering plate, metering block, power valve, jets, etc. that it would've had when it was new. Does someone know where I can get that info? None of the charts I've seen show the 3609 list number. Also, I'll be looking for the parts to convert it back: the end-pivot float bowls with the floats, vent parts, etc. and the shorter bolts, short fuel tube, etc. if anyone has extras to sell or trade. Thanks.