Thanks for the information. The two metering plates in my end carburetors had a stamping of #41 with a casting #34R-6153B. The PVCR (Power Valve Channel Restriction) or jetting (fig. A above) is staggered at .086 (driver side) and .073 (pass side) with the Secondary Idle Speed Restriction being .036 on both plates (front & rear carb), driver and pass side. Based on the parts book and what I am understanding then, the metering plates were the same for both front and rear carbs.

Is anyone familiar with how many turns out the air mixture screws were set from the factory on the end carbs? I know this must have been a very precise setting because all end carbs came with "plugs" over the adjusting needles so they couldn't be messed with.

Thanks