OK, 4343 is the rear carb for a 66/67 hemi, the 4139 is the frt carb. The factory jetting is as follows;
rear carb, (4343)primary jets, .089, secondary jets, .092(pump side) and .077(passenger side)
Metering rods, 16-543, (.069x.054) (pump side) and 16-544,(.071x.058) (passengerside)

front carb (4139) primary jets .089, secondary jets, .107 (pump side) and .089 (passenger side)
Metering rods, 16-136,(.071x.061)

The old MP recs for general hp use and racing are;

Front carb
left primary.083, right primary .101
left secndary.101, right secondary.101
Rod WOS .055

Rear carb
left primary.101 right primary .101
left secondary .101 right secondary .083
Rod WOS .055

Hope this helps, Dave